ECAT Pre General Science Physics Chapter 14 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 14 Electromagnetism

Try The MCQ's Test For ECAT Pre General Science Physics Chapter 14 Electromagnetism

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ECAT Pre General Science Physics Chapter 14 Electromagnetism

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Question # 1

When current passes through a solenoid coil, it behaves like a

Question # 2

Method "lamp and scale arrangement" used to measure the

Question # 3

Which is modified form of galvanometer

Question # 4

When the charged particle is projected at right angles to the field, then experienced by it will be:

Question # 5

A field is uniform and much stronger:

Question # 6

To convert galvanometer into ammeter we connect

Question # 7

The working of galvanometer depends upon torque exerted on a current carrying coil in

Question # 8

The torque per unit twist of coil is called

Question # 9

Ammeter is used to measure

Question # 10

The SI unit of magnetic flux is

Question # 11

Magnetic flux passing through a element whose vector area makes an angle0º with lines of magnetic force is:

Question # 12

The permeability of free space is measured in:

Question # 13

For the conversion of galvanometer into voltmeter, we connect a

Question # 14

The SI unit of magnetic induction is

Question # 15

At a given instant, a photon moves in +x direction in a region where there magnetic field in -z direction. The magnetic force on the proton will be the:

Question # 16

A current carrying conductor sets up its own:

Question # 17

The total number of lines of magnetic induction pasing through a surface perpendicular to the magnetic field is called

Question # 18

Hold the solenoid in the right hand with fingers curling in the direction of current. The direction of the field will be given by:

Question # 19

The force exerted on a conductor of length L, carrying current I when placed in a magnetic field B is given by

Question # 20

The SI unit of magnetic induction is tesla which is equal to

Question # 21

The current is measured in

Question # 22

The CRO deflects the beam of electrons, when they passes through uniform

Question # 23

When an electron enters in a magnetic field right angle to its motion, the magnitude of its velocity will be

Question # 24

A galvanometer in which the coil comes to rest quickly after the current passed through it, or the current stopped form flowing through it, is called

Question # 25

Total number of turns on 0.15 m length solenoid is 300. the value of n is:

Question # 26

In the expression of force experienced by electron, the direction of both v and B are

Question # 27

A solenoid is a coil of wire which is:

Question # 28

In a straight current carrying conductor, the direction of magnetic field can be found by

Question # 29

In the formula B= µ̻ nl, the symbol n denotes:

Question # 30

The magnetic field inside a solenoid can be increased by:

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The working of galvanometer depends upon torque exerted on a current carrying coil in
A. magnetic field
B. electric field
C. gravitational field
D. nuclear field
2 The vector representation of force experience give the direction of
A. magnetic field
B. current
C. length of conductor
D. force
3 Avo-meter is used of measure the
A. current, voltage
B. voltage, resistance
C. resistance, current
D. current, voltage and resistance
4 In order to make a voltmeter, high resistance is connected with galvanometer, in
A. perpendicular
B. may be paralled or pendicular
C. series
D. none of these
5

the current is pass through the straight wire. The magnetic field established around it has its lines of force:
A.

Circular and endless

B.

Oval in shape and endless

C.

Straight

D.

Parabolic
6 When some compass needles are placed on a card board along a circle with the center at the wire, they will
A.

Point the direction of N-S

B.

Set themselves tangential to the circle

C.

Point in the direction of E-W

D.

None of these
7 The e/m of an electron moving in a circular path in a magnetic field is equal to
A. V/Br
B. V/B2r2
C. V2/Br2
D. V2/Br
8

Amperean path is a:
A.

Closed path

B.

Rectangular path

C.

Circular path

D.

Any of above
9 If the number of turns of a solenoid (carrying a steady current I) is doubled without changing the length of a solenoid, then magnetic field:
A. Becomes Half
B. Becomes double
C. Is not affected
D. Becomes one fourth
10 The voltage increases linearly with
A. time
B. velocity
C. acceleration
D. torque

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