ECAT Pre General Science Chapter 12 online mcq test with answers for Physics chapter 12 (Electrostatics)

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ECAT Physics Chapter 12 Important MCQ's

Sr.#	Question	Answer
1	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
2	The capacitance of a parallel plate capacitor depends upon	A. Area of the plates B. Separation between the plates C. Medium between the plates D. All of the above
3	If we increase the distance between two plates of the capacitor, the capacitance will	A. Increase B. Decrease C. Remain same D. First increase then decrease
4	Which of the following represents an electric current?	A. C^-1 B. CS^-1 C. J.S^-1 D. dynes^-1
5	One electron volt is equal to	A. 1.6 x 1019eV B. 6.25 x 1018 eV C. 1.6 x 1018 eV D. 6.25 x 1019eV
6	The electric intensity outside the two oppositely charged parallel metal plates is	A. Maximum B. Minimum C. Zero D. Infinite
7	Potentiometer is more sensitive than voltmeter, because	A. Voltmeter has a very high resistance B. Voltmeter has a very low resistance C. Potentiometer does not draw any current from a source of unknown potential difference D. Potentiometer is sensitive
8	The current through a metallic conductor is due to the motion of	A. protons B. neutrons C. electrons D. free electrons
9	An electric charge at rest is	A. Only an electric field B. Only a magnetic field C. Both electric and magnetic fields D. None of the above
10	The force of repulsion between two point charges is F, when these are at a distance 0.1 m apart. Now the point charges are replaced by sphere of radii 5 cm each having the same charge as that of the respective point charges. The distance between their centre is again kept 0.1 m ; then the force of repulsion will	A. Increase B. Decrease C. Remain F D. Become 10F/9

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ECAT Pre General Science Physics Chapter 12 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 12 Electrostatics

ECAT Pre General Science Physics Chapter 12 Electrostatics

A point charge A of charge +4μC and another B of charge -1μC are placed in air at a distance 1 m apart. Then the distance of the point on the line joining the charge B, where the resultant electric field is zero, is (in m)

The SI unit of permitivity is

The resistance of a conductor does not depend on its

If the distance of separation between two chares is increased, the electrical potential energy of the system will

Thermocouple is an arrangement of two different metals

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

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

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

A parallel plate capacitor is first charged and then a dielectric slab is introduced between the plates. The quantity that remains unchanged is

The SI unit of conductivity is

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

The minimum charge on any object can not be less than

Calculate the amount of charge flowing in 2 minutes in a wire of resistance 10Ωwhen a potential difference of 20 V is applied between its ends

Three resistors of resistance R each are combined in various ways. Which of the following cannot be obtained?

The SI unit of current is

Which of the following represents an electric current?

One joule is equal to

A medium of dielectric constant 'K' is introduced between the plates of parallel plate condenser. As a result its capcitance

One coulomb per second is equal to

Free electrons are

The electric lines of force are

The powers of tow electric bulbs are 100 W and 200 W. Both of them are joined with 220 V mains. The ratio of resistances of their filaments will be

The electric field due to an infinite long thin wire at a distance R varies as

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

The energy required to charge a capacitor of 5μF by connecting D.C. source of 20 KV is

A metal plate of thickness half the separation between the capacitor plates of capacitance C is inserted. The new capacitance is

Two point charge +3μC and +8μC repel each other with a force of 40 N. If a charge of -5μC is added to each of them, then the force between then will become

The electric intensity outside the two oppositely charged parallel metal plates is

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

Electric generators which convert mechanical energy into

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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?