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

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

Question # 2

The force acting on a charge moving in a magnetic field

Question # 3

When charged particle is projected perpendicular to a uniform magnetic field its trajectory is

Question # 4

Method "lamp and scale arrangement" used to measure the

Question # 5

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

Question # 6

The unit of flux density is also given by

Question # 7

In order to make a voltmeter, high resistance is connected with galvanometer, in

Question # 8

When a suitable small resistance is put in parallel with the galvanometer coil, it is converted into

Question # 9

Ammeter is used to measure

Question # 10

A solenoid is a coil of wire which is:

Question # 11

A resistance used in galvanometer to make it voltmeter is called

Question # 12

The force experienced by charged particle is maximum, if it moves

Question # 13

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 # 14

If the value of galvanometer constant k = C/BAN is made small, the galvanometer can be made

Question # 15

If current through conductor is 1 A and length of conductor is 1m placed at right angle to the magnetic field, then the strength of magnetic field is

Question # 16

In a moving coil galvanometer, the deflecting couple depends upon

Question # 17

A meter wire carraying a current of 2A is at right angle to the uniform magnetic field of 0.5 Weber/m2The force on the wire is

Question # 18

A current carrying conductor sets up its own:

Question # 19

41 The force experience, when proton projected in a magnetic field with velocity 'v' is

Question # 20

The current is measured in

Question # 21

The most suitable material for permanent magnet is

Question # 22

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

Question # 23

The vector representation of force experience give the direction of

Question # 24

The current sensitivity of the galvanometer is

Question # 25

'K' is the proportionality constant of force experienced by conductor. What is the value of 'K' in SI units?

Question # 26

Which one of the following relations is correct?

Question # 27

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

Question # 28

Current is measured in

Question # 29

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

Question # 30

How many number of anodes used in electron gun

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The unit of flux density is also given by
A. Weber/m2or Wb . m-2
B. Weber/mor Wb . m
C. Weber/mor Wb . m-1
D. Weber or Wb
2 When an electron enters in a magnetic field right angle to its motion, the magnitude of its velocity will be
A. changed
B. zero
C. unchanged
D. none of these
3 A current carrying conductor sets up its own:
A.

Electric field

B.

Nuclear field

C.

Magnetic field

D.

Both (A) and (C)
4

The pointer of a magnetic compass:
A.

Is affected only by permanent magnets

B.

Align itself parallel to the applied magnetic field

C.

Vibrates in the magnetic field of the current

D.

Aligns itself perpendicular to the magnetic field
5 Magnetic flux passing through a element whose vector area makes an angle0º with lines of magnetic force is:
A. BACosѲ

B. Zero
C. BA
D. BA sinѲ
6 The SI unit of flux density is.
A. Tesla
B. Weber
C. Gaun
D. Weber/meter
7 If current through conductor is 1 A and length of conductor is 1m placed at right angle to the magnetic field, then the strength of magnetic field is
A. F = B2
B. F = 0
C. F = B
D. F = B/2
8 Strength of magnetic field is measured in SI units, in:
A. N
B. N/Am
C. Am/N
D. Nm/A
9 It is customary represent a current flowing towards the reader by a symbol
A. (x)
B. (+)
C. (.)
D. (-)
10 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

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