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	In case of a parallel plate capacitor if the plate separation is doubled and plate area is halved, the capacitance becomes	A. Four-fold B. One-half C. One-fourth D. Zero
2	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
3	The energy required to charge a capacitor of 5μF by connecting D.C. source of 20 KV is	A. 10 KJ B. 5 KJ C. 2 KJ D. 1 KJ
4	The electric intensity outside the two oppositely charged parallel metal plates is	A. Maximum B. Minimum C. Zero D. Infinite
5	A medium of dielectric constant 'K' is introduced between the plates of parallel plate condenser. As a result its capcitance	A. Increase k time B. Decreases k times C. Decreases 1/K times D. Remains unchanged
6	A uniform resistance wire of Length L and diameter d has a resistance R. Another wire of same material has length, 4L and diameter 2d, the resistance will be	A. 2 R B. R C. R/2 D. R/4
7	A 60 W bulb operates on 220 V supply. The current flowing through the bulb is	A. 11/3 A B. 3 A C. 3/11 A D. 6
8	Current provided by a battery is maximum when	A. Internal resistance equal to external resistance B. Internal resistance is greater than external resistance C. Internal resistance is less then external resistance D. None of these
9	A capacitor of capacity 1μF is charged to 1 KV. The energy stored in J	A. 5 B. 0.5 C. 0.005 D. 50
10	The earth's potential is taken as	A. Negative B. Positive C. Zero D. Infinite

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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 SI unit of electric field intensity is

Three resistance 500,500 and 50 ohms are connected in series across 555 volts mains. The current flowing through them will be

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

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

The force between two chares 0.06 m apart is 5 N. If each charge is moved towards the other by 0.01 m, then the force between them will become

One coulomb of charge is created by

The electric lines of force are

The electric flux is linked with a surface will be maximum when

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

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

The liquid which conduct current is known as

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

The thermistors are usually made of

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)

Free electrons are

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

A car battery has e.m.f 12 volt and internal resistance 5 x 10-2ohm. If it draws 60 ampere current, the terminal voltage of the battery will be

Solar cell converts sunlight directly into

One coulomb per second is equal to

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 resistance of a conductor does not depend on its

The capacity of a parallel plat capacitor depends on the

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

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?

The unit of intensity of electric field is

An electric charge at rest is

The potential difference across each resistance in series combination 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

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

Electron volt is the unit 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?

A car battery has e.m.f 12 volt and internal resistance 5 x 10^-2ohm. If it draws 60 ampere current, the terminal voltage of the battery will be