Question # 1

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

Choose an answer

200 J

100 J

1000 J

400 J

If we increase the distance between two plates of the capacitor, the capacitance will

Choose an answer

Increase

Decrease

Remain same

First increase then decrease

Two point charges A and B separated by a distance R attract each other with a force of 12 x 10^-3N. The force between A and B when the charges on them are doubled and distance is halved

Choose an answer

1.92 N

19.2 N

12 N

0.192 N

A capacitor of capacity 1μF is charged to 1 KV. The energy stored in J

Choose an answer

5

0.5

0.005

50

Equal charges are given to two spheres of different radii. The potential will

Choose an answer

Be more on the smaller sphere

Be more on the bigger sphere

Be equal on both the sphere

Depend on the nature of the material of the sphere

The statement "the electric force of repulsion or attraction between two point charges is directly proportional to the product of the charges and inversely proportional to square of the distance between them" refer to

Choose an answer

Coulomb's law

Gauss's law

Biot-Sarwat law

Ampere's law

The fractional change in resistance per kelvin is known as

Choose an answer

temperature coefficient

resistance coefficient

super temperature

critical temperature

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

Choose an answer

Infinite

Positive

Zero

Negative

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

Choose an answer

711μF

611μF

811μF

511μF

One joule is equal to

Choose an answer

1.6 x 10¹⁹eV

6.25 x 10¹⁸eV

1.6 x 18¹⁸eV

6.25 x 10¹⁹eV

The substances whose resistance decreases with the increase in temperature these substances have coefficient of

Choose an answer

positive temperature

negative temperature

absolute temperature

zero temperature

A piece of fuse wire melts when a current of 15 ampere flows through it. With this current. If it dissipates 22.5 W, the resistance of fuse wire will be

Choose an answer

Zero

10Ω

1Ω

0.10Ω

The energy stored in a charge capacitor

Choose an answer

1/2CV²

1/2C²V

1/2C/V²

None of these

If the distance of separation between two chares is increased, the electrical potential energy of the system will

Choose an answer

Increase

Decrease

May increase or decrease

Remain the same

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

Choose an answer

1.25 x 10^-3J

3.75 x 10^-3J

2.5 x 10^-3J

5 x 10^-3J

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

Choose an answer

7.20 N

11.25 N

22.50 N

45.00

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

Choose an answer

Ve

V/e

e/V

2Ve

The unit of intensity of electric field is

Choose an answer

newton/coluomb

jule/coluomb

volt x metre

newton/metre

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

Choose an answer

Conductor

Semiconductor

Insulator

Alloy

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

Choose an answer

0.4 A

11.4 A

9.8 A

10.6 A

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

Choose an answer

5μF

20μF

10μF

15μF

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

Choose an answer

Decreases

Increases

Remains uncharged

Becomes zero

Physicist George Simon ohm was a

Choose an answer

German physical

French physicist

Chinese physicist

Russian physicist

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

Choose an answer

They have the same potential

They have the same amount of charge

They have the same capacity

They have the same shape

If the two charges in Coulomb's law have double distance between them, then electric force

Choose an answer

Becomes two-fold

Becomes four-fold

Remains the same

None of these

The SI unit of permitivity is

Choose an answer

Nm²C²

N^-1m^-2C²

NmC²

Nm²C^-1

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

Choose an answer

0.1 watt

1 watt

10 watt

100 watt

The resistance of an incandescent lamp is

Choose an answer

Smaller when switched on

Greater when switched off

The same whether it is switch off or switch on

Greater when switched on

The relation between the charge Q of a parallel plate capacitor and the P.D between its plates is

Choose an answer

Q=V/C

Q=C/V

Q=1/2CV

Q=CV

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

Choose an answer

negative charges

positive charges

protons

electrons

Consider a spherical shell of metal at he centre of which a positive point charge is kept

Choose an answer

The electric filed is zero outside the shell

The electric field is zero everywhere

The electric field is zero in the region inside the shell

The electric field is non-zero in both regions outside and inside the shell

More Classes

Other Links

ECAT Pre General Science Physics Chapter 12 Electrostatics Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer