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 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
2	A (100 W , 200 W) bulb is connected to a 160 V power supply. The power consumption would be	A. 64 W B. 80 W C. 100 W D. 125 W
3	The ohm's is defined as	A. 1 ampere / 1 volts B. 1 coulomb / 1 volt C. 1 volt / 1 ampere D. 1 volt / 1 coulomb
4	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	A. 10μF B. 20μF C. 30μF D. 15μF
5	Resistance of a conductor is increased, the currant will	A. Decrease B. Increase C. Remain the same D. None of these
6	The current through a metallic conductor is due to the motion of	A. protons B. neutrons C. electrons D. free electrons
7	Coulomb's force between two point charges depends upon	A. Magnitude of charges B. Distance between them C. Medium in which they are located D. All of the above
8	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
9	A heater coil rated at (1000 W - 200 V) is connected to 110 volt line. What will be the power consumed?	A. 200 W B. 302.5 C. 250 W D. 350 W
10	Coulomb force, when any material medium is placed between two charges	A. Increases B. Decreases C. Remain unchanged D. None of these

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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 capacitance of a parallel plate capacitor depends upon

An electric charge at rest is

A 60 W bulb operates on 220 V supply. The current flowing through the bulb is

Surface density of charge is defined as

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

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

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 certain charge liberates 0.8 g of oxygen. The same charge will liberate. how many g of silver?

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

A medium of dielectric constant 'K' is introduced between the plates of parallel plate condenser. As a result its capcitance

The electric flux from a closed surface

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

The unit of intensity of electric field is

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

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

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

Electron volt is the unit of.

Resistance of a conductor is increased, the currant will

The SI unit of capacitance is

The powers of tow electric bulbs are 100 W and 200 W. Both of them are joined with 220 V mains. The ratio of resistances of their filaments will be

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

The resistance of an incandescent lamp is

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

In Pakistan electricity is supplied for domestic use at 220 V, it is supplied at 110 V in USA. If the resistance of a 60 W bulb for use in Pakistan is R, the resistance of a 60 W bulb for use in USA will be

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

Coulomb force, when any material medium is placed between two charges

In case of a parallel plate capacitor if the plate separation is doubled and plate area is halved, the capacitance becomes

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

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

One joule is equal to

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ECAT Physics Chapter 12 Important MCQ's

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