ECAT Pre Engineering Physics Chapter 12 MCQ Test With Answer

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ECAT Class Physics Chapter 12 Important MCQ's

Sr.#	Question	Answer
1	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	A. 1.92 N B. 19.2 N C. 12 N D. 0.192 N
2	A closed surface contains two equal and opposite charges. The net electric flux from the surface will be	A. Negative B. Positive C. Infinite D. Zero
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	The charge carriers in electrolyte are positive and negative	A. protons B. electrons C. ions D. none of these
5	The unit of resistance is	A. volt B. ampere C. ohm D. coat
6	The current through a metallic conductor is due to the motion of	A. protons B. neutrons C. electrons D. free electrons
7	In bringing an electron towards another electron, electrostatic potential energy of system	A. Decreases B. Increases C. Remains uncharged D. Becomes zero
8	A charge of 0.1 c accelerated through a potential difference of 1000V acquires kinetic energy	A. 200 J B. 100 J C. 1000 J D. 400 J
9	The thermistors are usually made of	A. Metals with low temperature coefficient of resistivity B. Metals with high temperature coefficient of resistivity C. Metal oxides with high temperature coefficient of resistivity D. Semi conducting materials having low temperature coefficient of resistivity
10	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

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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 resistance of the given conductor can be increased by

A wire is bent into a ring of radius R is given a charge q. The magnitude of the electrical field at the centre of the ring is

A heater coil rated at (1000 W - 200 V) is connected to 110 volt line. What will be the power consumed?

The potential difference across the conductors should be maintained constant by connecting the ends of wire to the terminal of a device called a source of

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The minimum charge on any object can not be less than

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

The electric lines of force are

The fractional change in resistance per kelvin is known as

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A proton is about 1840 times heavier than an electron. When it is accelerated by a potential difference of 1 KV, its kinetic energy will be

The SI unit of current is

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106electrons are moving through a wire per second, the current developed is

If a 40 watt light bulb burns for 2 hours. how much heat is generated

The electrode connected with the positive terminal of the current source is called

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

The electric intensity at infinite distance from the point charge will be

The statement "the electric force of repulsion or attraction between two point charges is directly proportional to the product of the charges and inversely proportional to square of the distance between them" refer to

The nature of capacity of electrostatic capacitor depends on

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

In bringing an electron towards another electron, electrostatic potential energy of system

The resistance of a conductor does not depend on its

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

A conducting wire is drawn to double its length. Final resistivity of the material will be

Which one of the following causes production of heat when current is set up in a wire?

If the distance between the plates of a parallel plate condenser of capacity 10μF is doubled then new capacity will be

Ohm is the unit of

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

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ECAT Class Physics Chapter 12 Important MCQ's

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10⁶electrons are moving through a wire per second, the current developed is