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 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
2	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
3	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
4	Ohm is the unit of	A. current B. capacitance C. energy D. resistance
5	Equal charges are given to two spheres of different radii. The potential will	A. Be more on the smaller sphere B. Be more on the bigger sphere C. Be equal on both the sphere D. Depend on the nature of the material of the sphere
6	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?	A. 60 W bulb B. 100 W bulb C. Both equally D. None of these
7	The electric flux is linked with a surface will be maximum when	A. The surface is held parallel to the electric field B. The surface is held perpendicular to the electric field C. The surface makes an angle of 45° with the electric field D. All of the above
8	In a building, there are 15 bulbs of 40 watts, 5 bulbs of 100 watts, 5 fans of 80 watts and a heater of 1 kilowatt. The voltage of the electric main is 220 volts. The minimum efficiency of the main fuse of the building will be	A. 0.4 A B. 11.4 A C. 9.8 A D. 10.6 A
9	Solar cell converts sunlight directly into	A. potential energy B. thermal energy C. mechanical energy D. electrical energy
10	The unit of intensity of electric field is	A. newton/coluomb B. jule/coluomb C. volt x metre D. newton/metre

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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 earth's potential is taken as

The energy stored in a charge capacitor

If an electron of charge 'e' is accelerated through a potential difference V., it will acquire energy

The SI unit of current is

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

One coulomb per second is equal to

In a voltmeter the conduction takes place due to

Free electrons are

A charge of 0.1 c accelerated through a potential difference of 1000V acquires kinetic energy

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

The fractional change in resistance per kelvin is known as

Electron volt is the unit of

Resistance of a conductor depends upon

Two electric bulbs of 200 W and 100 W have same voltage. If R1and R2be their resistance respectively then

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

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

The relation V = IR represents

Current provided by a battery is maximum when

Three resistors of resistance 2,3 and 6 ohms are connected in parallel, their equivalent resistance is

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

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

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

Force acting upon a charged particle kept between the plates of a charged condenser if F. IF one of the plates of the condenser is removed, force acting on the same will become

The unit of intensity of electric field is

Taking the earth to be a spherical conductor of diameter 12.8 x 103km. Its capacity will be

An electric charge at rest is

The thermistors are usually made of

The resistance of the given conductor can be increased by

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

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

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ECAT Physics Chapter 12 Important MCQ's

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Two electric bulbs of 200 W and 100 W have same voltage. If R₁and R₂be their resistance respectively then

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

Taking the earth to be a spherical conductor of diameter 12.8 x 10³km. Its capacity will be

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