Objective Questions

Questions (1820)

#	Question	Topic	Actions
1301	A wire carries a current of 30 A. If the wire is 5 cm long, what is the magnitu…	PHY 102 Past Questions	View
1302	A length of wire has a resistance of 10 Ohm. What is the resistance of a wire o…	PHY 102 Past Questions	View
1303	When a magnet is in motion relative to a coil, the induced e.m.f. does not depe…	PHY 102 Past Questions	View
1304	A magnetic induction of 20 uT is applied by a long straight current-carrying wi…	PHY 102 Past Questions	View
1305	Materials having a non-linear voltage-current relationship are	PHY 102 Past Questions	View
1306	Calculate the equivalent resistance between A and B. [figure: 5, 10, 15, 20 ohm]	PHY 102 Past Questions	View
1307	A long wire carries a current toward the north in a magnetic field that is dire…	PHY 102 Past Questions	View
1308	The unit of resistivity is?	PHY 102 Past Questions	View
1309	A 2 m wire is in a 2x10-6 T magnetic field pointing into the page. It carries 2…	PHY 102 Past Questions	View
1310	If the flow of electric current is parallel to the magnetic field, the force wi…	PHY 102 Past Questions	View
1311	A battery of emf 4 V and internal resistance of 2 Ohm is joined to a resistor o…	PHY 102 Past Questions	View
1312	According to the principles of electrostatics, what happens when two charged pl…	Electrostatics: Electric Charge and Coulomb's Law	View
1313	What is the fundamental rule regarding the conservation of electric charge in a…	Electrostatics: Electric Charge and Coulomb's Law	View
1314	Which of the following best describes the distribution of charge within a neutr…	Electrostatics: Electric Charge and Coulomb's Law	View
1315	A 200 V battery fully charges a capacitor of capacitance C. It is then discharg…	PHY 102 Past Questions	View
1316	A water molecule is described as a 'polar molecule.' What does this mean in ter…	Electrostatics: Electric Charge and Coulomb's Law	View
1317	Which category of materials allows electric charge to flow freely through them?	Electrostatics: Electric Charge and Coulomb's Law	View
1318	If a neutral metal rod is charged by 'conduction,' what must occur?	Electrostatics: Electric Charge and Coulomb's Law	View
1319	What is the result of 'charge separation' in a neutral metal rod when a positiv…	Electrostatics: Electric Charge and Coulomb's Law	View
1320	What is the primary function of an electroscope in a laboratory setting?	Electrostatics: Electric Charge and Coulomb's Law	View
1321	According to Coulomb's Law, the electric force between two point charges is inv…	Electrostatics: Electric Charge and Coulomb's Law	View
1322	What is the value of the proportionality constant 'k' in Coulomb's Law?	Electrostatics: Electric Charge and Coulomb's Law	View
1323	If a charge is measured as 1 μC (microcoulomb), how many coulombs is it equal t…	Electrostatics: Electric Charge and Coulomb's Law	View
1324	The charge on a single electron is approximately 1.602 x 10^-19 C. What does th…	Electrostatics: Electric Charge and Coulomb's Law	View
1325	In the vector form of Coulomb's Law, the force is directed along what path?	Electrostatics: Electric Charge and Coulomb's Law	View
1326	Two charges, Q1 = 50 μC and Q2 = 1 μC, are separated by a distance. How does th…	Electrostatics: Electric Charge and Coulomb's Law	View
1327	How is the electric field (E) defined at a specific point in space?	Electrostatics: Electric Charge and Coulomb's Law	View
1328	Which of the following describes the electric field generated by a single posit…	Electrostatics: Electric Charge and Coulomb's Law	View
1329	In a photocopy machine, how is the dry toner (ink) attracted to the drum?	Electrostatics: Electric Charge and Coulomb's Law	View
1330	If the electric field at a point is 3.0 x 10^5 N/C directed to the right, what …	Electrostatics: Electric Charge and Coulomb's Law	View
1331	What happens to the electric field strength at a point if the distance from a p…	Electrostatics: Electric Charge and Coulomb's Law	View
1332	How should a continuous distribution of charge be treated when calculating the …	Electrostatics: Electric Charge and Coulomb's Law	View
1333	What is the electric field formula for an infinite plane of charge with surface…	Electrostatics: Electric Charge and Coulomb's Law	View
1334	Between two closely spaced, oppositely charged parallel plates, the electric fi…	Electrostatics: Electric Charge and Coulomb's Law	View
1335	A proton and an electron are released from rest 1 meter apart. Where would they…	Electrostatics: Electric Charge and Coulomb's Law	View
1336	The number of electric field lines starting or ending on a charge is proportion…	Electrostatics: Electric Charge and Coulomb's Law	View
1337	What is an electric dipole?	Electrostatics: Electric Charge and Coulomb's Law	View
1338	The current measured at the secondary of a 240V/12V transformer is 2 A. Calcula…	PHY 102 Past Questions	View
1339	What is the static electric field inside a good conductor in equilibrium?	Electrostatics: Electric Charge and Coulomb's Law	View
1340	Where does the net charge on a conductor reside when it is in electrostatic equ…	Electrostatics: Electric Charge and Coulomb's Law	View
1341	The electric field at the surface of a conductor must be directed in what way?	Electrostatics: Electric Charge and Coulomb's Law	View
1342	A neutral hollow metal box can protect its interior from external electric fiel…	Electrostatics: Electric Charge and Coulomb's Law	View
1343	What is the 'dipole moment' (p) of an electric dipole defined as?	Electrostatics: Electric Charge and Coulomb's Law	View
1344	If we reverse direction of electric current, then direction of magnetic field w…	PHY 102 Past Questions	View
1345	In which direction does the dipole moment vector (p) point?	Electrostatics: Electric Charge and Coulomb's Law	View
1346	When an electric dipole is placed in a uniform electric field, it experiences a…	Electrostatics: Electric Charge and Coulomb's Law	View
1347	What does 'electric flux' (ΦE) represent through a given area?	Electrostatics: Electric Charge and Coulomb's Law	View
1348	For a uniform electric field perpendicular to a flat area A, how is the electri…	Electrostatics: Electric Charge and Coulomb's Law	View
1349	According to Gauss's Law, the net electric flux through any closed surface is e…	Electrostatics: Electric Charge and Coulomb's Law	View
1350	Which one of the following options will NOT result in an induced current? (	PHY 102 Past Questions	View
1351	Which of the following is a primary benefit of using Gauss's Law over Coulomb's…	Electrostatics: Electric Charge and Coulomb's Law	View
1352	What is the net electric flux through a closed Gaussian surface that encloses n…	Electrostatics: Electric Charge and Coulomb's Law	View
1353	What is the electric field inside a thin spherical shell that carries a uniform…	Electrostatics: Electric Charge and Coulomb's Law	View
1354	Outside a uniformly charged spherical shell, the electric field behaves as if:	Electrostatics: Electric Charge and Coulomb's Law	View
1355	Inside a nonconducting solid sphere of radius r₀ with uniform charge distributi…	Electrostatics: Electric Charge and Coulomb's Law	View
1356	What is the electric field just outside any conducting surface with surface cha…	Electrostatics: Electric Charge and Coulomb's Law	View
1357	If a point charge +q is placed inside a cavity of a neutral conductor, what cha…	Electrostatics: Electric Charge and Coulomb's Law	View
1358	What happens to the outer surface of a neutral conductor if a +q charge is plac…	Electrostatics: Electric Charge and Coulomb's Law	View
1359	In the procedure for solving Gauss's Law problems, what is the first step?	Electrostatics: Electric Charge and Coulomb's Law	View
1360	The apparent power developed in an R-L a.c. circuit is 30 VA. If the source is …	PHY 102 Past Questions	View
1361	What units are used for electric flux in the SI system?	Electrostatics: Electric Charge and Coulomb's Law	View
1362	A microcoulomb (μC) is equal to how many elementary charges (e)?	Electrostatics: Electric Charge and Coulomb's Law	View
1363	Which of these materials is specifically mentioned as a nonconductor that can e…	Electrostatics: Electric Charge and Coulomb's Law	View
1364	The direction of the electric force on a charge depends on:	Electrostatics: Electric Charge and Coulomb's Law	View
1365	If you move a charge in a direction where the electric field lines are getting …	Electrostatics: Electric Charge and Coulomb's Law	View
1366	The total electric field at any point due to multiple charges is found by:	Electrostatics: Electric Charge and Coulomb's Law	View
1367	What is the acceleration (a) of a particle with charge q and mass m in an elect…	Electrostatics: Electric Charge and Coulomb's Law	View
1368	In a uniform electric field, a dipole experiences no net 'force' but a net 'tor…	Electrostatics: Electric Charge and Coulomb's Law	View
1369	The formula for flux through a non-flat surface involves what mathematical oper…	Electrostatics: Electric Charge and Coulomb's Law	View
1370	A copper bar 30 cm long is perpendicular to a field of 0.8 T and moves at right…	PHY 102 Past Questions	View
1371	A resistor, 100 Ohm, is connected to an a.c. source given as v = 300 sin(wt). I…	PHY 102 Past Questions	View
1372	A 120-V power line is protected by a 15-A fuse. What is the maximum number of "…	PHY 102 Past Questions	View
1373	Which constant relates the 'k' in Coulomb's Law to 'ε₀' in Gauss's Law?	Electrostatics: Electric Charge and Coulomb's Law	View
1374	A coil of wire with N turns and area A is placed into a magnetic field of magni…	PHY 102 Past Questions	View
1375	If a charge is placed on a nonconducting sphere (insulator), where does the cha…	Electrostatics: Electric Charge and Coulomb's Law	View
1376	Which of the following is the best way to demagnetise a magnetised steel needle?	PHY 102 Past Questions	View
1377	A Wheatstone bridge is said to be balanced when the current through the galvano…	PHY 102 Past Questions	View
1378	In A.C. circuits, opposition to the flow of current is generally referred to as	PHY 102 Past Questions	View
1379	A resistor 20 Ohm and an inductor 500mH are connected in series across a 120V 5…	PHY 102 Past Questions	View
1380	Magnitude of induced e.m.f is proportional to	PHY 102 Past Questions	View
1381	A straight wire of length 0.20 m moves at a speed of 3.0 m/s at 90 degrees to a…	PHY 102 Past Questions	View
1382	A straight conductor of length 25cm moves with a velocity of 30m/s in a magneti…	PHY 102 Past Questions	View
1383	In a coil of wire, the direction of the induced current caused by an increasing…	PHY 102 Past Questions	View
1384	The emf of a battery is equal to its terminal potential difference:	PHY 102 Past Questions	View
1385	The flow of charge per unit time defines	PHY 102 Past Questions	View
1386	What is the net force on a charge located exactly in the center between two equ…	Electrostatics: Electric Charge and Coulomb's Law	View
1387	The permittivity of free space (ε₀) appears in the denominator of Gauss's Law. …	Electrostatics: Electric Charge and Coulomb's Law	View
1388	Which of the following is true about electric field lines?	Electrostatics: Electric Charge and Coulomb's Law	View
1389	What happens to the electric field (E) at infinity for a point charge?	Electrostatics: Electric Charge and Coulomb's Law	View
1390	Field which does not have magnetic poles is	PHY 102 Past Questions	View
1391	When the current flowing in a coil is doubled and the number of turns of the co…	PHY 102 Past Questions	View
1392	A copper coil has a resistance of 200 ohms at 0 degC. Calculate its resistance …	PHY 102 Past Questions	View
1393	A 60 ohm resistor is connected in series with a 120 ohm resistor. What is the e…	PHY 102 Past Questions	View
1394	Ohm's law can be applied only to a __________ circuit or component:	PHY 102 Past Questions	View
1395	In A.C. circuits, one of the following statements is INCORRECT:	PHY 102 Past Questions	View
1396	A capacitor of 22 uF and a resistor of 200 Ohm are connected in series across a…	PHY 102 Past Questions	View
1397	The equation of a sinusoidal waveform is given by I = 15 sin(wt). Calculate the…	PHY 102 Past Questions	View
1398	Find the maximum torque on a 100-turn square loop of wire, 10.0 cm on a side, t…	PHY 102 Past Questions	View
1399	Calculate the resonant frequency of a R-C-L series circuit with R = 300 Ohm, C …	PHY 102 Past Questions	View
1400	Lines of the magnetic field produced by a long straight wire carrying a current…	PHY 102 Past Questions	View

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Questions (1820)