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	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
2	The colour sequence in a carbon resistor in red, brown, orange and silver. The resistance of the resistor is	A. 21 x 10³+ 10% B. 23 x 10¹+ 10% C. 21 x 10³+ 5% D. 12 x 10³+ 5%
3	The electric field will be uniform	A. Near a positive point charge B. Near a negative point charge C. Between two oppositely charged parallel metal plates D. None of above
4	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
5	A sheet of aluminium foil of negligible thickness is introduced between the plates of a capacitor. The capacitance of the capacitor	A. Increases B. Decreases C. Remain unchanged D. Becomes infinite
6	Some charge is being given to a conductor. Then its potential	A. Is maximum at surface B. Is maximum at centre C. Is remain same throughout the conductor D. Is maximum somewhere between surface and centre
7	If 2.2 kilowatt power is transmitted through 1 10 ohm line at 22000 volt, the power loss in the form of heat will be	A. 0.1 watt B. 1 watt C. 10 watt D. 100 watt
8	The relation between charge 'Q' and current 'I' is given by	A. Q = I/t B. Q = It C. Q = I²t D. Q = I²/t
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 electric intensity at infinite distance from the point charge will be	A. Infinite B. Positive C. Zero D. Negative

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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

If a charged spherical conductor of radius 10 cm has potential V at a point distance 5 cm from its centre, then the potential at a point distance 15 cm from the centre will be

At ordinary temperature, an increase in temperature increases the conductivity of

In a Milikian's oil drop experiment the charge on an oil drop is calculated to be 6.35 x 10-19C. The number of excess electrons on the drop is

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

Ohm's law states that

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

The unit of resistivity is

The electric lines of force are

The concept of field theory was put forward by

A ten ohm electric heater operates on a 110 V line. Calculate the rate at which it develops heat in watts

One coulomb of charge is created by

The speed of randomly moving electrons depends upon

Ohm is the unit of

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

Two conductors having the same type of charges are connected by a conducting wire. There would not be any amount of charges on them if

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

Electric potential of earth is taken to be zero because the earth is good

A capacitor is charged with a battery and then it is disconnected. A slab of dielectric is now inserted between the plates, then

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

Ohm established a relation between

The value of electrical constant of proportionality k is

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

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

A wire of radius r has resistance R. If it is stretched to a wire of r/2 radius, then the resistance becomes

When a dielectric material is introduced between the plates of a charged condenser the electric field between the plates

A cube of metal is given a positive charge Q. For the above system, which of the following statements is true?

The charge per unit time through any cross-section of a conductor is called

The SI unit of electric flux is

The resistivity of a substance depends upon the

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

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ECAT Physics Chapter 12 Important MCQ's

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In a Milikian's oil drop experiment the charge on an oil drop is calculated to be 6.35 x 10^-19C. The number of excess electrons on the drop is