Question # 1

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

Electric flux is defined by the relation

Choose an answer

E.A.

E x A

E/A

none of these

The liquid which conduct current is known as

Choose an answer

heating effect

chemical energy

electrolyte

ohm's law

An electric charge at rest is

Choose an answer

Only an electric field

Only a magnetic field

Both electric and magnetic fields

None of the above

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

Choose an answer

21 x 10³+ 10%

23 x 10¹+ 10%

21 x 10³+ 5%

12 x 10³+ 5%

The unit of intensity of electric field is

Choose an answer

newton/coluomb

jule/coluomb

volt x metre

newton/metre

Some charge is being given to a conductor. Then its potential

Choose an answer

Is maximum at surface

Is maximum at centre

Is remain same throughout the conductor

Is maximum somewhere between surface and centre

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

Choose an answer

200 W

302.5

250 W

350 W

A hollow insulated conduction sphere is given a positive charge of 10μC. What will be the electric field at the centre of the sphere if its radius is 2 meters?

Choose an answer

Zero

5μC m^-2

20μC m^-2

8μC m^-2

Calculate the amount of charge flowing in 2 minutes in a wire of resistance 10Ωwhen a potential difference of 20 V is applied between its ends

Choose an answer

120 C

240 C

20 C

4 C

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

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

Battery is charged in motor cars, which is based on

Choose an answer

Chemical effect

Magnetic effect

Electric effect

None

The capacity of a parallel plat capacitor depends on the

Choose an answer

Type to metal used

Thickness of plates

Potential applied across the plates

Separation between the plates

If the resistance of 2 ohm and 4 ohm are connected in parallel, the equivalent resistance will be

Choose an answer

6 ohm

4 ohm

zero ohm

1.33 ohm

The electric intensity outside the two oppositely charged parallel metal plates is

Choose an answer

Maximum

Minimum

Zero

Infinite

A current of 1.6 A is passed through a solution of CuSO_{4. How many Cu}²⁺ions are liberated in one minute?

Choose an answer

3 x 10²⁰

3 x 10¹⁰

6 x 10²⁰

6 x 10¹⁰

What is the current is a 2 x 10⁶ohm resistor having a potential difference of 2 x 10³volts?

Choose an answer

10^-1A

10^-2A

10^-4A

1 mA

Solar cell converts sunlight directly into

Choose an answer

potential energy

thermal energy

mechanical energy

electrical energy

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?

Choose an answer

60 W bulb

100 W bulb

Both equally

None of these

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

Choose an answer

Conductor

Semiconductor

Insulator

Alloy

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

Choose an answer

288 x 10³J

288 x 10⁸J

288 x 10⁵J

288 x 10⁶J

The dot product of electric field intensity E and vector area A is called

Choose an answer

Electric potential

Electric flux

Electric field

Magnetic field

The resistance of the given conductor can be increased by

Choose an answer

Increasing the area

Changing resistivity

Decreasing the length

None of the above because change does not matter because in any case the volume remains the same

Which one of the following has larger value of relative permitivity E_rat room temperature?

Choose an answer

Vaccum

Air

Glass

Water

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

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

Choose an answer

E=mg/q

E=q/mg

E=,g/q

E=qg/m

In a voltmeter the conduction takes place due to

Choose an answer

Electrons only

Holes only

Electrons and holes

Electrons and ions

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

Choose an answer

0.1 watt

1 watt

10 watt

100 watt

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

More Classes

Other Links

Physics ECAT Pre Engineering 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