ECAT Pre Engineering Physics Chapter 12 MCQ Test With Answer

Top Scorers Of Physics ECAT Pre Engineering Chapter 12 Electrostatics MCQ`s Test

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Mehreen Ather 02 - Dec - 2024 30 Min 19 Sec 90/120
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Salvaa Sheikh 13 - Sep - 2024 24 Min 16 Sec 85/120
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Sualeh Murtaza 15 - Nov - 2024 05 Min 29 Sec 80/120
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Furqan Asif 26 - Mar - 2026 36 Min 02 Sec 72/120
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usman gujjar 02 - Dec - 2024 07 Min 03 Sec 70/120
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hussain naqvi 19 - Sep - 2024 18 Min 43 Sec 65/120
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Humera Noor 27 - Dec - 2024 19 Min 28 Sec 65/120

ECAT Physics Chapter 12 Important MCQ's

Sr.#	Question	Answer
1	The relation between the charge Q of a parallel plate capacitor and the P.D between its plates is	A. Q=V/C B. Q=C/V C. Q=1/2CV D. Q=CV
2	The earth's potential is taken as	A. Negative B. Positive C. Zero D. Infinite
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	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	The resistivity of a substance depends upon the	A. length B. mass C. area D. temperature
6	At ordinary temperature, an increase in temperature increases the conductivity of	A. Conductor B. Semiconductor C. Insulator D. Alloy
7	Ohm's law states that	A. The current through a resistor is directly proportional to the applied voltage B. The voltage across a resistor is directly proportional to the current passing through it C. Resistance is the constant of proportionality between the voltage and current D. all of these
8	If the length of the conductor is double and its cross sectional area is halved, its conductance will	A. Increase four fold B. Become one-fourth C. Become one-half D. Remains unchanged
9	Free electrons are	A. tightly bound B. fixed C. loosely bound D. tightly fixed
10	Which one of the following causes production of heat when current is set up in a wire?	A. Fall of electrons from higher orbits to lower orbits B. Inter-atomic collisions C. Inter-electron collisions D. Collisions of conduction electron with atoms

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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 charge carriers in electrolyte are positive and negative

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

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

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

Capacitance of two or more capacitors

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

The colour sequence in a carbon resistor in red, brown, orange and silver. The resistance of the resistor is

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

Resistance of a conductor depends upon

The resistance of 20 cm long wire is 10Ω. When the length is changed to 40 cm. The new resistance is

Physicist George Simon ohm was a

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

If one volt is needed to cause a current of one ampere to flow in a conductor, its resistance is

Battery is charged in motor cars, which is based on

The unit of resistance is

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

The current through a metallic conductor is due to the motion of

One coulomb per second is equal to

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

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

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

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

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

One coulomb of charge is created by

In a charged capacitor the energy is stored in

The electric intensity at infinite distance from the point charge will be

The electric field will be uniform

The unit of conductance 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 material in the form of wire or rod or plate which leads the current into or cut of the electrolyte is known as

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ECAT Physics Chapter 12 Important MCQ's

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