Objective Questions

Questions (1820)

#	Question	Topic	Actions
301	When cells are connected in parallel,	PHY 102 Past Questions	View
302	Primary coil supplied with 45 V, secondary potential difference 450 V. Turns ra…	PHY 102 Past Questions	View
303	Which is correct about flux from a point charge? I. product of E and force betw…	PHY 102 Past Questions	View
304	Four capacitors each of 4 F in parallel. Equivalent capacitance?	PHY 102 Past Questions	View
305	One kilowatt hour of electrical energy is the same as	PHY 102 Past Questions	View
306	Parallel plate capacitor area 2000 cm², plates 1 cm apart. V₀=3000 V, decreases…	PHY 102 Past Questions	View
307	Resistor 20 Ω and inductor 500 mH in series across 120 V, 50 Hz. Current?	PHY 102 Past Questions	View
308	Which law relates electric flux through a surface with net enclosed charge?	PHY 102 Past Questions	View
309	Point charge -30 μC at origin. Electric field at point 50 cm along x-direction?	PHY 102 Past Questions	View
310	Which is true about electric dipole?	PHY 102 Past Questions	View
311	Consequence of motor effect is	PHY 102 Past Questions	View
312	Magnitude of induced emf is proportional to	PHY 102 Past Questions	View
313	Sum of emfs and potential differences around closed loop equals zero is consequ…	PHY 102 Past Questions	View
314	For any charge configuration, equipotential surface through a point is ______ t…	PHY 102 Past Questions	View
315	Name given to current induced when metal sheet is pulled from a magnetic field?	PHY 102 Past Questions	View
316	Electric flux is negative when angle between E and A is	PHY 102 Past Questions	View
317	Straight wire length 0.20 m moves at 3.0 m/s perpendicular to B=0.10 T. Induced…	PHY 102 Past Questions	View
318	Arrange forces in order of increasing strength	PHY 102 Past Questions	View
319	One kilowatt hour is same as (repeat)	PHY 102 Past Questions	View
320	External resistance R connected to cell of internal resistance r. Current is ma…	PHY 102 Past Questions	View
321	Solenoid: 100 turns, length 75 mm, current 12 A. Magnetic induction? (repeat)	PHY 102 Past Questions	View
322	Surface charge density on sphere radius 5 cm, charge 1 μC?	PHY 102 Past Questions	View
323	Straight conductor length 25 cm moves at 30 m/s in B=0.4 T, resistance 0.8 Ω. C…	PHY 102 Past Questions	View
324	Three capacitors each of 3 F in series. Equivalent capacitance?	PHY 102 Past Questions	View
325	Current 0.3 A through lamp for 2 minutes using 6 V supply. Energy dissipated?	PHY 102 Past Questions	View
326	Two bulbs in series, one blows out. Other bulb? (repeat)	PHY 102 Past Questions	View
327	If magnetic flux density and current are at right angles, component of force on…	PHY 102 Past Questions	View
328	Which is correct about charge q moving with velocity v in uniform B? I. FB depe…	PHY 102 Past Questions	View
329	Counting rate 8000 counts/s at t=0, 1000 counts/s after 10 minutes. Decay const…	PHY 102 Past Questions	View
330	From Coulomb’s law, slope of log F vs log r graph?	PHY 102 Past Questions	View
331	In an RLC series phasor, we start drawing phasor from which quantity?	PHY 102 Past Questions	View
332	Which is correct about application of Gauss law? I. charge distribution known; …	PHY 102 Past Questions	View
333	Alternating voltage peak 80 V across 60 Ω. Current? (peak current? rms? ambiguo…	PHY 102 Past Questions	View
334	Parallel plate air capacitor with constant voltage source, dielectric K=2 inser…	PHY 102 Past Questions	View
335	Force on electron due to electric field equals weight of electron. Magnitude of…	PHY 102 Past Questions	View
336	Car battery rated 80 A·h. Ampere-hour is unit of	PHY 102 Past Questions	View
337	According to r = mv/(Be), faster moving particles	PHY 102 Past Questions	View
338	6 V battery supplies 48 W to two identical headlights in parallel. Resistance o…	PHY 102 Past Questions	View
339	Which statement is NOT true of electric fields?	PHY 102 Past Questions	View
340	In a coil of wire, direction of induced current caused by increasing magnetic f…	PHY 102 Past Questions	View
341	Emf induced in coil depends on: I. number of turns; II. friction at suspension;…	PHY 102 Past Questions	View
342	Total flux when q₁=15 μC, q₂=-17 μC inside spherical surface radius 20 cm?	PHY 102 Past Questions	View
343	A battery is used to charge a parallel-plate capacitor, after which it is disco…	PHY 102 Past Questions	View
344	Currents that flow in circles inside a disc are known as	PHY 102 Past Questions	View
345	Two plane mirrors are inclined to each other so as to produce eight images. Wha…	PHY 102 Past Questions	View
346	If electrons flow from the earth to a body, the body is said to have	PHY 102 Past Questions	View
347	A current of 0.3 A is passed through a lamp for 2 minutes using a 6 V power sup…	PHY 102 Past Questions	View
348	Which gives the magnetic force F on charge q moving with velocity V in field B?	PHY 102 Past Questions	View
349	Which factor does NOT affect the capacitance of a capacitor?	PHY 102 Past Questions	View
350	Which is the unit for electric field strength?	PHY 102 Past Questions	View
351	The potential difference required for 0.2 A in a conductor of resistance 20 Ω i…	PHY 102 Past Questions	View
352	Two capacitors, each 2 μF, in parallel across 120 V. Charge on each capacitor?	PHY 102 Past Questions	View
353	Out of the following statements concerning an electric field, which is NOT true?	PHY 102 Past Questions	View
354	Capacitance of a parallel plate air capacitor depends on the following except:	PHY 102 Past Questions	View
355	A car battery is rated at 80 A·h. An ampere-hour is a unit of:	PHY 102 Past Questions	View
356	The electric flux emerging from a rectangular surface area 0.025 m² is 10 N·m²/…	PHY 102 Past Questions	View
357	If 4 μF and 2 μF capacitors are connected in series, the equivalent capacitance…	PHY 102 Past Questions	View
358	An electron moves in a uniform magnetic field B with velocity 10⁷ m/s. Force on…	PHY 102 Past Questions	View
359	Cyclotron is used to	PHY 102 Past Questions	View
360	When capacitors are connected in series, equivalent capacitance is _____ each i…	PHY 102 Past Questions	View
361	A sinusoidal voltage is applied to a series RLC circuit with L=10.0 mH, C=100 n…	PHY 102 Past Questions	View
362	Induced emf in a straight conductor of length L moving with velocity V perpendi…	PHY 102 Past Questions	View
363	A certain resistor dissipates 0.5 W when connected to 3 V. When connected to 1 …	PHY 102 Past Questions	View
364	Pulse of sound produced at bottom of boat, reflected from sea bed 1000 m below,…	PHY 102 Past Questions	View
365	When three capacitors are joined in series, total capacitance is	PHY 102 Past Questions	View
366	The force on a charged particle depends on: I. charge on body; II. strength of …	PHY 102 Past Questions	View
367	Two wires A and B, same length, same material, circular cross-section. Wire A h…	PHY 102 Past Questions	View
368	Which one does NOT change magnetic flux linking conductor?	PHY 102 Past Questions	View
369	The periodic time of a SHO is 2 s. After what time will kinetic energy become 2…	PHY 102 Past Questions	View
370	The flow of charge per unit time defines	PHY 102 Past Questions	View
371	The SI unit of potential difference is?	PHY 102 Past Questions	View
372	Capacitance of parallel plate air capacitor depends on except: (repeat)	PHY 102 Past Questions	View
373	If two capacitors of 10 μF each are connected in parallel, equivalent capacitan…	PHY 102 Past Questions	View
374	One Joule per coulomb is called:	PHY 102 Past Questions	View
375	Which is correct about Coulomb’s law? I. bodies small compared to distance; II.…	PHY 102 Past Questions	View
376	To obtain high capacitance, permittivity of dielectric should be	PHY 102 Past Questions	View
377	The main source of internal resistance of a cell is	PHY 102 Past Questions	View
378	A potentiometer is a device used to	PHY 102 Past Questions	View
379	Lenz’s law indicates that induced currents form to oppose	PHY 102 Past Questions	View
380	For an ohmic resistor, resistance is proportionality constant for	PHY 102 Past Questions	View
381	Two farad and four farad capacitors in series. Equivalent capacitance?	PHY 102 Past Questions	View
382	Two capacitors of 3 μF in parallel across 15 V. Charge stored by each?	PHY 102 Past Questions	View
383	If two charges are similar, Coulomb’s law implies force is: I. attractive; II. …	PHY 102 Past Questions	View
384	Which is NOT a property of electric lines of force?	PHY 102 Past Questions	View
385	Radioactive source half-life 1 minute. Counting rate 2000 counts/s at t=0. Deca…	PHY 102 Past Questions	View
386	Which statement is NOT correct about photoelectric emission?	PHY 102 Past Questions	View
387	Hydrogen has three isotopes. Which statement is correct?	PHY 102 Past Questions	View
388	Force per meter on two wires carrying 1 A, 1 m apart is	PHY 102 Past Questions	View
389	In a circuit with emf, resistor, inductor, magnetic potential energy is stored	PHY 102 Past Questions	View
390	Surface charge density on sphere radius 1 cm is 796 μC/m². Total charge?	PHY 102 Past Questions	View
391	How far apart are two charges 3 C and 5 C if force is 20 N?	PHY 102 Past Questions	View
392	Weakest force in nature is	PHY 102 Past Questions	View
393	The dot product of E and vector area A of a surface is called	PHY 102 Past Questions	View
394	Total potential difference across three cells becomes maximum when	PHY 102 Past Questions	View
395	Transformer: primary 500 turns, secondary 2000 turns, output 1000 V. Input volt…	PHY 102 Past Questions	View
396	An inductor of inductance 4.0 mH has resistance 15 Ω. Impedance when inductive …	PHY 102 Past Questions	View
397	EMF can be induced in a coil if	PHY 102 Past Questions	View
398	Which statement about a capacitor is incorrect?	PHY 102 Past Questions	View
399	SI unit for magnetic flux is	PHY 102 Past Questions	View
400	One electron volt is	PHY 102 Past Questions	View

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