ECAT Pre Engineering Physics Chapter 12 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 12 Electrostatics

Try The MCQ's Test For Physics ECAT Pre Engineering Chapter 12 Electrostatics

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Physics ECAT Pre Engineering Chapter 12 Electrostatics

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Question # 1

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

Question # 2

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

Question # 3

The ohm's is defined as

Question # 4

The electric field will be uniform

Question # 5

Electron volt is the unit of.

Question # 6

The liquid which conduct current is known as

Question # 7

A car battery has e.m.f 12 volt and internal resistance 5 x 10-2ohm. If it draws 60 ampere current, the terminal voltage of the battery will be

Question # 8

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

Question # 9

A cube of metal is given a positive charge Q. For the above system, which of the following statements is true?

Question # 10

In a charged capacitor the energy is stored in

Question # 11

A parallel plate capacitor is first charged and then a dielectric slab is introduced between the plates. The quantity that remains unchanged is

Question # 12

An electron of charge e coulomb passes through a potential difference of V volts its energy in joules will be

Question # 13

Current provided by a battery is maximum when

Question # 14

When a dielectric material is introduced between the plates of a charged condenser the electric field between the plates

Question # 15

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

Question # 16

One joule is equal to

Question # 17

The charge carriers in electrolyte are positive and negative

Question # 18

Cause of heat production in a current carrying conductor is

Question # 19

Thermocouple is an arrangement of two different metals

Question # 20

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

Question # 21

A 100 W, 200 V bulb is connected to a 160 volts supply. The actual power consumption would be

Question # 22

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

Question # 23

The unit of resistance is

Question # 24

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

Question # 25

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

Question # 26

The nature of capacity of electrostatic capacitor depends on

Question # 27

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

Question # 28

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

Question # 29

Resistance of a conductor depends upon

Question # 30

The minimum charge on any object can not be less than

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ECAT Physics Chapter 12 Important MCQ's

Sr.# Question Answer
1 If electric and gravitational force on an electron in a uniform electric field will be
A. E=mg/q
B. E=q/mg
C. E=,g/q
D. E=qg/m
2 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
A. 2 R
B. R
C. R/2
D. R/4
3 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
4 Which one of the following is the unit of electric field intensity
A. JC-1
B. Vm-1
C. Cm-1
D. CJ-1
5 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
6 The unit of resistance is
A. volt
B. ampere
C. ohm
D. coat
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 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
A. 0.1 watt
B. 1 watt
C. 10 watt
D. 100 watt
9 Solar cell converts sunlight directly into
A. potential energy
B. thermal energy
C. mechanical energy
D. electrical energy
10 Some charge is being given to a conductor. Then its potential
A. Is maximum at surface
B. Is maximum at centre
C. Is remain same throughout the conductor
D. Is maximum somewhere between surface and centre

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