ECAT Pre Engineering Physics Chapter 12 MCQ Test With Answer

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ECAT Physics Chapter 12 Important MCQ's

Sr.#	Question	Answer
1	A charge Q is divided into two parts q and Q - q and separated by a distance R. The force of repulsion between them will be maximum when	A. q = Q/4 B. q = Q/2 C. q = ! D. None of these
2	If the two charges in Coulomb's law have double distance between them, then electric force	A. Becomes two-fold B. Becomes four-fold C. Remains the same D. None of these
3	A parallel plate capacitor is first charged and then a dielectric slab is introduced between the plates. The quantity that remains unchanged is	A. Charge Q B. Potential V C. Capacity D. Energy U
4	Free electrons are	A. tightly bound B. fixed C. loosely bound D. tightly fixed
5	A (100 W , 200 W) bulb is connected to a 160 V power supply. The power consumption would be	A. 64 W B. 80 W C. 100 W D. 125 W
6	The conventional current in a circuit is defined as " current which passes from a point at higher potential to a point at lower potential as if it represent a movement of	A. negative charges B. positive charges C. protons D. electrons
7	When an electron is accelerated through a P.D. of an one volt, it will acquire energy equal to	A. One joule B. One erg C. One electron volt D. None of these
8	Electron volt is the unit of.	A. Potential difference B. Energy C. Resistance D. Capacitance
9	The electric field intensity at a point due to a point charge	A. Falls off inversely as the distance B. Falls off inversely as the square of distance C. Remains unchanged with distance D. Increase directly as square of distance
10	The minimum resistance that can be obtained by connecting 5 resistance of 1/4Ωeach is	A. 4/5Ω B. 5/4Ω C. 20Ω D. 0.05 Ω

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ECAT Pre Engineering Physics Chapter 12 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 12 Electrostatics

Physics ECAT Pre Engineering Chapter 12 Electrostatics

The ohm's is defined as

Electron volt is the unit of.

Resistance of a conductor is increased, the currant will

If we plot graph between potential difference (V) and current (I) obeying ohm's law, it will give us

The graphical representation of ohm's law is

Potentiometer is more sensitive than voltmeter, because

The resistance of a conductor does not depend on its

A capacitor of capacity 1μF is charged to 1 KV. The energy stored in J

A one microfarad capacitor of a TV is subjected to 4000 V potential difference. The energy stored in capacitor is

A sheet of aluminium foil of negligible thickness is introduced between the plates of a capacitor. The capacitance of the capacitor

A current of 1.6 A is passed through a solution of CuSO4. How many Cu2+ions are liberated in one minute?

Battery is charged in motor cars, which is based on

The current through a metallic conductor is due to the motion of

The unit of resistivity is

Consider a spherical shell of metal at he centre of which a positive point charge is kept

Taking the earth to be a spherical conductor of diameter 12.8 x 103km. Its capacity will be

Electron volt is the unit of

If 2.2 kilowatt power is transmitted through a 10 ohm line at 22000 volt, the power loss in the form of heat will be

An electron of charge e coulomb passes through a potential difference of V volts its energy in joules will be

If the two charges in Coulomb's law have double distance between them, then electric force

The excess (equal in number) of electrons that must be placed on each of two small spheres spaced 3 cm apart, with force of repulsion between the spheres to be 10-19N, is

When an electron is accelerated through a P.D. of an one volt, it will acquire energy equal to

The earth's potential is taken as

Coulomb force, when any material medium is placed between two charges

If the resistance of 2 ohm and 4 ohm are connected in parallel, the equivalent resistance will be

Two point charges A and B separated by a distance R attract each other with a force of 12 x 10-3N. The force between A and B when the charges on them are doubled and distance is halved

The material in the form of wire or rod or plate which leads the current into or cut of the electrolyte is known as

Some charge is being given to a conductor. Then its potential

The SI unit of current is

Resistance of a conductor depends upon

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ECAT Physics Chapter 12 Important MCQ's

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A current of 1.6 A is passed through a solution of CuSO_{4. How many Cu}²⁺ions are liberated in one minute?

Taking the earth to be a spherical conductor of diameter 12.8 x 10³km. Its capacity will be

The excess (equal in number) of electrons that must be placed on each of two small spheres spaced 3 cm apart, with force of repulsion between the spheres to be 10^-19N, is

Two point charges A and B separated by a distance R attract each other with a force of 12 x 10^-3N. The force between A and B when the charges on them are doubled and distance is halved