ECAT Pre Engineering Physics Chapter 12 MCQ Test With Answer

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suzi 10 - Feb - 2026 08 Min 22 Sec 64/120

ECAT Physics Chapter 12 Important MCQ's

Sr.#	Question	Answer
1	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	A. negative charges B. positive charges C. protons D. electrons
2	Ohm is the unit of	A. current B. capacitance C. energy D. resistance
3	Three resistance 500,500 and 50 ohms are connected in series across 555 volts mains. The current flowing through them will be	A. 0.52 A B. 1 mA C. 0.7 mA D. 1.4 A
4	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
5	The unit of intensity of electric field is	A. newton/coluomb B. jule/coluomb C. volt x metre D. newton/metre
6	Free electrons are	A. tightly bound B. fixed C. loosely bound D. tightly fixed
7	A wire of radius r has resistance R. If it is stretched to a wire of r/2 radius, then the resistance becomes	A. 2R B. 4R C. 16R D. Zero
8	Which of the following represents an electric current?	A. C^-1 B. CS^-1 C. J.S^-1 D. dynes^-1
9	The resistivity of a substance depends upon the	A. length B. mass C. area D. temperature
10	The current through a metallic conductor is due to the motion of	A. protons B. neutrons C. electrons D. free electrons

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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

Electric potential of earth is taken to be zero because the earth is good

The minimum resistance that can be obtained by connecting 5 resistance of 1/4Ωeach is

The electric field due to an infinite long thin wire at a distance R varies as

An electric dipole is at the centre of a hollow sphere of radius r. The total normal electric flux through the sphere is (here Q is the charge and d is the distance between the two charges of the dipole)

The earth's potential is taken as

The liquid which conduct current is known as

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

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

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

Electric generators which convert mechanical energy into

In bringing an electron towards another electron, electrostatic potential energy of system

The SI unit of electric field intensity is

Which of the following represents an electric current?

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

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

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

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 capacity of a parallel plat capacitor depends on the

A metal plate of thickness half the separation between the capacitor plates of capacitance C is inserted. The new capacitance is

Ohm is the unit of

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 conductivity of a superconductor is

An electric charge at rest is

Ohm's law states that

Electron volt is the unit of

The resistance of the given conductor can be increased by

If electric and gravitational force on an electron in a uniform electric field will be

The electrode connected with the positive terminal of the current source is called

Resistance of a conductor depends upon

The nature of capacity of electrostatic capacitor depends on

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ECAT Physics Chapter 12 Important MCQ's

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