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 50 volt battery is connected across 10 ohm resistor. The current is 4.5 A. The internal resistance of the battery is	A. Zero B. 0.5Ω C. 1.1Ω D. 5.0Ω
2	When a dielectric material is introduced between the plates of a charged condenser the electric field between the plates	A. Decreases B. Increases C. No change D. May increase or decresase
3	Electron volt is the unit of	A. Potential difference B. Energy C. Resistance D. Capacitance
4	An electron of charge e coulomb passes through a potential difference of V volts its energy in joules will be	A. V/e B. eV C. e/V D. V
5	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
6	In a charged capacitor the energy is stored in	A. Both in positive and negative charges B. Positive charges C. The edges of the capacitor plates D. The electric field between the plates
7	A one microfarad capacitor of a TV is subjected to 4000 V potential difference. The energy stored in capacitor is	A. 8 J B. 16 J C. 4 x 10^-3J D. 2 x 10^-3J
8	Specific resistance of a wire depends upon	A. Length B. Cross-section area C. Mass D. None
9	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
10	The unit of resistance is	A. volt B. ampere C. ohm D. coat

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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

Magnetic effect at a point caused due to flow a current depend upon the

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

A 100 W, 200 V bulb is connected to a 160 volts supply. The actual power consumption would be

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

A condenser of capacity 50μF is charged to 10 V.The energy stored is

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

The value of electrical constant of proportionality k is

Resistance of a conductor depends upon

Resistance of a conductor is increased, the currant will

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

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

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

If two bulbs one of 60 W and other of 100 W are connected in parallel, then which one of the following will flow more?

If we increase the distance between two plates of the capacitor, the capacitance will

The fractional change in resistance per kelvin is known as

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

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

The SI unit of permitivity is

The electric field intensity at a point due to a point charge

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

If the length of the conductor is double and its cross sectional area is halved, its conductance will

Which one of the following is the unit of electric field intensity

The potential difference across each resistance in series combination is

The SI unit of electric flux is

A 10 F capacitor is charged to a potential difference of 50 V and is connected to another uncharged capacitor in parallel. Now the common potential difference becomes 20 volt.The capacitance of second capacitor is

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

The energy stored in a charge capacitor

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

The substances whose resistance decreases with the increase in temperature these substances have coefficient of

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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?