Objective Questions
All objective questions for PHY 102
Questions (1819)
| # | Question | Topic | Actions |
|---|---|---|---|
| 1401 |
Current measured at secondary of 240V/12V transformer is 2A. Primary current?
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Test Compilation PHY 102 4 | View |
| 1402 |
When do we get maximum energy from a set of capacitors?
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Test Compilation PHY 102 4 | View |
| 1403 |
The direction of induced emf can be found by
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Test Compilation PHY 102 4 | View |
| 1404 |
The capacitance is directly proportional to the area of?
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Test Compilation PHY 102 4 | View |
| 1405 |
When three capacitors are joined in series, the total capacitance is?
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Test Compilation PHY 102 4 | View |
| 1406 |
Lenz’ law states that the direction of induced emf and hence current
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Test Compilation PHY 102 4 | View |
| 1407 |
The magnetic field B is a function of magnetic flux Φ and cross-sectional area …
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Test Compilation PHY 102 4 | View |
| 1408 |
An inductor L=1H in series with R=150Ω, AC source 60V, 50Hz. Phase angle?
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Test Compilation PHY 102 4 | View |
| 1409 |
Two identical batteries, each emf 18V, internal resistance 1Ω, in parallel, acr…
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Test Compilation PHY 102 4 | View |
| 1410 |
Which of the following is false.
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Test Compilation PHY 102 4 | View |
| 1411 |
Two charges Q1=500 mC, Q2=100 mC at r1=3j m, r2=4i m. Force on Q2?
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Test Compilation PHY 102 4 | View |
| 1412 |
If we reverse direction of electric current, direction of magnetic field will be
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Test Compilation PHY 102 4 | View |
| 1413 |
The plane of a conducting wire loop is parallel to x-y plane. B field in z-dire…
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Test Compilation PHY 102 4 | View |
| 1414 |
Electric motor: 240V, 15A, armature resistance 0.15Ω. Power developed in armatu…
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Test Compilation PHY 102 4 | View |
| 1415 |
The force per unit charge is known as?
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Test Compilation PHY 102 4 | View |
| 1416 |
wire length 2.5m, current 1.3A, inclined at angle θ to B=0.4T, force 0.92N. Fin…
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Test Compilation PHY 102 4 | View |
| 1417 |
Force between two parallel current-carrying conductors is F. If current in each…
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Test Compilation PHY 102 4 | View |
| 1418 |
What part tells that motor is DC not AC?
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Test Compilation PHY 102 4 | View |
| 1419 |
Which is correct about total flux through a sphere of radius r around a point c…
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Test Compilation PHY 102 4 | View |
| 1420 |
Work function of platinum twice that of calcium. Min photon energy for Pt is E.…
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Test Compilation PHY 102 4 | View |
| 1421 |
Amount of diffraction through an opening depends on
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Test Compilation PHY 102 4 | View |
| 1422 |
Which is TRUE about magnetic flux?
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Test Compilation PHY 102 4 | View |
| 1423 |
Which will NOT result in induced current?
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Test Compilation PHY 102 4 | View |
| 1424 |
Energy to charge a 10 µF capacitor to 100 V? (Capacitance value missing unit)
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Test Compilation PHY 102 4 | View |
| 1425 |
Apparent power = 30 VA, source 36V, R=40Ω. Power factor?
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Test Compilation PHY 102 4 | View |
| 1426 |
Total flux emerging from a given charge is independent of medium. This is state…
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Test Compilation PHY 102 4 | View |
| 1427 |
When a glass rod is rubbed with silk, which best describes what happens?
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Test Compilation PHY 102 4 | View |
| 1428 |
Which cannot be units of electric intensity?
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Test Compilation PHY 102 4 | View |
| 1429 |
Battery emf 24V, 6Ω resistor, current 3A. Terminal p.d.? (repeat from earlier)
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Test Compilation PHY 102 4 | View |
| 1430 |
Fleming’s left hand rule is used to find
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Test Compilation PHY 102 4 | View |
| 1431 |
In generators, rate of change of flux linkage is maximum when coil is moving th…
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Test Compilation PHY 102 4 | View |
| 1432 |
SI unit of potential difference is?
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Test Compilation PHY 102 4 | View |
| 1433 |
For an electron, magnitude of force on it in B field?
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Test Compilation PHY 102 5 | View |
| 1434 |
Light bulb: input 50W for 60s, heat produced 2400J. Efficiency?
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Test Compilation PHY 102 5 | View |
| 1435 |
Process by which emf is induced when magnetic flux changes is called
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Test Compilation PHY 102 5 | View |
| 1436 |
Two point charges are separated by a distance of 10 cm. One has a charge of -25…
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Test Compilation PHY 102 5 | View |
| 1437 |
In transformer, core is made up of soft iron in order to pass maximum
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Test Compilation PHY 102 5 | View |
| 1438 |
When a battery, resistor, switch, and inductor form a circuit, and switch is cl…
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Test Compilation PHY 102 5 | View |
| 1439 |
The phenomenon of producing an induced emf with the aid of a magnetic field is
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Test Compilation PHY 102 5 | View |
| 1440 |
conductor of length L has current I, placed parallel to magnetic field. Force e…
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Test Compilation PHY 102 5 | View |
| 1441 |
In order to increase range of ammeter, value of shunt resistance Rs is
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Test Compilation PHY 102 5 | View |
| 1442 |
Can magnetic flux lines be seen?
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Test Compilation PHY 102 5 | View |
| 1443 |
How much current does a 60W light bulb draw when connected to 240V?
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Test Compilation PHY 102 5 | View |
| 1444 |
If separation of plates of a parallel plate capacitor is halved, its capacitanc…
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Test Compilation PHY 102 5 | View |
| 1445 |
Ohm’s law can be used only to a ______________ circuit or component
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Test Compilation PHY 102 5 | View |
| 1446 |
Inductor connected to 24V, 50Hz AC, current 0.5A. Inductance?
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Test Compilation PHY 102 5 | View |
| 1447 |
Shape of equipotential surface for an infinite line charge is
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Test Compilation PHY 102 5 | View |
| 1448 |
Wire carries 30A, length 5cm, in B=0.8T. Maximum force?
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Test Compilation PHY 102 5 | View |
| 1449 |
Three point charges: q1=15μC at x=2m, q2=6μC at origin, resultant force on q3 (…
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Test Compilation PHY 102 5 | View |
| 1450 |
A length of wire has resistance 10Ω. Resistance of same material, three times l…
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Test Compilation PHY 102 5 | View |
| 1451 |
Flux density is defined by
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Test Compilation PHY 102 5 | View |
| 1452 |
Coil of wire with N turns, area A, in B field, angle φ between normal and B. Wh…
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Test Compilation PHY 102 5 | View |
| 1453 |
Length of wire has resistance 10Ω. Same material, three times length, twice are…
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Test Compilation PHY 102 5 | View |
| 1454 |
When a magnet is in motion relative to a coil, induced emf does NOT depend upon
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Test Compilation PHY 102 5 | View |
| 1455 |
Sinusoidal voltage applied to series RLC: L=10mH, C=100nF, R=20Ω. Quality facto…
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Test Compilation PHY 102 5 | View |
| 1456 |
When capacitors are connected in parallel, effective plate area?
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Test Compilation PHY 102 5 | View |
| 1457 |
Electric field 2.0 m from point charge is 8.0×10⁴ N/C. Field at 4.0 m?
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Test Compilation PHY 102 5 | View |
| 1458 |
Two tuning forks: 256 Hz and 260 Hz. Beat frequency?
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Test Compilation PHY 102 5 | View |
| 1459 |
Working principle of transformer depends on
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Test Compilation PHY 102 5 | View |
| 1460 |
Which method of magnetising a steel rod produces the strongest magnet?
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Test Compilation PHY 102 5 | View |
| 1461 |
Value of electric field vector along surface of constant potential 100V is
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Test Compilation PHY 102 5 | View |
| 1462 |
Which is not correct about Gauss’s law? I. net charge = algebraic sum; II. net …
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Test Compilation PHY 102 5 | View |
| 1463 |
Copper coil resistance 200Ω at 0°C. Resistance at 80°C? α=0.004041 °C⁻¹.
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Test Compilation PHY 102 5 | View |
| 1464 |
6V battery supplies 48W to two identical headlights in parallel. Resistance of …
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Test Compilation PHY 102 5 | View |
| 1465 |
Resistance of wire is r Ω. Stretched to double length. New resistance?
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Test Compilation PHY 102 5 | View |
| 1466 |
Unraveling an electromagnet gives
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Test Compilation PHY 102 5 | View |
| 1467 |
Transformer: primary 500 turns, secondary 1000 turns, primary voltage 240V. Sec…
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Test Compilation PHY 102 5 | View |
| 1468 |
Uniform E=41 N/C, plates length 0.5m, width 0.001m, separation 1.5 cm. Voltage …
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Test Compilation PHY 102 5 | View |
| 1469 |
In SI unit, J/C is equal to
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Test Compilation PHY 102 5 | View |
| 1470 |
Best way to demagnetise a magnetised steel needle?
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Test Compilation PHY 102 5 | View |
| 1471 |
When glass rod rubbed with silk (repeat)
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Test Compilation PHY 102 5 | View |
| 1472 |
Which is correct about Gauss’ law? If enclosed charge is
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Test Compilation PHY 102 5 | View |
| 1473 |
6 mF and 3 mF capacitors in series across 18 V. Charge on each?
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Test Compilation PHY 102 5 | View |
| 1474 |
Four wires meet at junction: 4A in, 5A out, 2A out. Fourth carries?
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Test Compilation PHY 102 5 | View |
| 1475 |
Calculate the electric field outside a spherical Gaussian surface at a point th…
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Test Compilation PHY 102 5 | View |
| 1476 |
Emf induced in a coil rotating in a uniform magnetic field will be maximum when
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Test Compilation PHY 102 5 | View |
| 1477 |
Series RLC: R=10Ω, L=0.5H, C=10μF, source 100V, 50Hz. Impedance and phase angle?
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Test Compilation PHY 102 5 | View |
| 1478 |
Potential difference across 4Ω resistor is 20V. Heat radiated in 10 seconds?
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Test Compilation PHY 102 5 | View |
| 1479 |
Transformer: primary 200 turns, secondary 600 turns, primary current 12A. Secon…
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Test Compilation PHY 102 5 | View |
| 1480 |
2-µF and 1-µF capacitors in series from battery, charges P and Q. Then disconne…
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Test Compilation PHY 102 5 | View |
| 1481 |
2 m wire in 2×10⁻⁶ T field into page, current 2 A up. Force?
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Test Compilation PHY 102 5 | View |
| 1482 |
Loop: 25 turns, area 2.0×10⁻³ m², current 1.25 A, plane parallel to B=0.2 T. To…
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Test Compilation PHY 102 5 | View |
| 1483 |
Parallel plate air capacitor: 0.2 m square plates, 1 cm apart, 50 V battery. Ch…
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Test Compilation PHY 102 5 | View |
| 1484 |
Parallel plate air capacitor charged to 100V. 2mm dielectric inserted, distance…
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Test Compilation PHY 102 6 | View |
| 1485 |
Wire: 30A, 5cm long, B=0.8T. Maximum force? (repeat)
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Test Compilation PHY 102 6 | View |
| 1486 |
Three charges +1mC, -1mC, -1mC at vertices of equilateral triangle side 2cm. Fi…
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Test Compilation PHY 102 6 | View |
| 1487 |
i = I_m sin(2ωt). Frequency in Hz?
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Test Compilation PHY 102 6 | View |
| 1488 |
Electric field 2.0 m from point charge is 8.0×10⁴ N/C. Field at 4.0 m? (repeat)
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Test Compilation PHY 102 6 | View |
| 1489 |
Four cells each 1.5V in parallel. Equivalent emf?
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Test Compilation PHY 102 6 | View |
| 1490 |
Two point charges 6 cm apart, moved to 3 cm. Force changes by factor?
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Test Compilation PHY 102 6 | View |
| 1491 |
Solenoid: 100 turns, length 75 mm, diameter 40 mm, current 12 A. Magnetic induc…
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Test Compilation PHY 102 6 | View |
| 1492 |
Electric flux emerging from circular surface radius 0.025 m, E=100 V/m, angle 3…
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Test Compilation PHY 102 6 | View |
| 1493 |
Hall probe is made up of
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Test Compilation PHY 102 6 | View |
| 1494 |
Correct units for electric field strength?
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Test Compilation PHY 102 6 | View |
| 1495 |
Force on moving charge in uniform B depends on
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Test Compilation PHY 102 6 | View |
| 1496 |
Materials with non-linear V-I relationship are
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Test Compilation PHY 102 6 | View |
| 1497 |
Which statement is TRUE? (conductors)
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Test Compilation PHY 102 6 | View |
| 1498 |
Electron in B field: v=10⁷ m/s (assumed), F=1.6×10⁻¹³ N. B?
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Test Compilation PHY 102 6 | View |
| 1499 |
Two bulbs in series, one blows out. Other bulb?
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Test Compilation PHY 102 6 | View |
| 1500 |
Two identical capacitors: air and oil, same charge. Ratio E_air/E_oil?
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Test Compilation PHY 102 6 | View |