ECAT Pre Computer Science Chapter 14 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 14 Electromagnetism

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ECAT Physics Chapter 14 Electromagnetism

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Question # 1

NmA-1 is commonly called:

Question # 2

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

Question # 3

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

Question # 4

The angle of deflection of coil can be measured by the

Question # 5

The SI unit of magnetic permeability is

Question # 6

The direction of lines of force depends upon the direction of

Question # 7

Magnetic induction is also called as:

Question # 8

Charge to mass ratio (e/m) of an electron is given by the relation

Question # 9

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

Question # 10

The field around a moving charge is called

Question # 11

The current is measured in

Question # 12

Magnetic lines of force:

Question # 13

The pointer of a magnetic compass:

Question # 14

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

Question # 15

The most suitable material for permanent magnet is

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Charge to mass ratio (e/m) of an electron is given by the relation
A. e/m = 2V/Br2
B. e/m = 2V/B2r
C. e/m = 2V/B2r2
D. e/m = V/2B2r2
2

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
3 Method "lamp and scale arrangement" used to measure the
A. angle of deflection
B. restoring torque
C. magnetic field strength
D. current
4 Magnetic flux passing through the an element of are A placed perpendicular to a uniform magnetic field Bis:
A. Maximum
B. Minimum
C. Zero
D. Very small
5 The magnetic field outside the solenoid due to current is
A. strong
B. zero
C. weak
D. uniform
6 The magnetic field in the middle of a solenoid due to current is
A. weak
B. strong and uniform
C. none-uniform
D. zero
7 The force experienced by a single charge carrier moving with velocity 'v' i magnetic field of strength 'B' is given by
A. F =q(v/B)
B. F=q2(v x B)
C. F=q(v x B)
D. F= vx B
8 41 The force experience, when proton projected in a magnetic field with velocity 'v' is
A. +e(v x B)
B. -C(V x B)
C. +e2(v x B)
D. -e(v2x B)
9 The current in microamperes required to produce one millimeter deflection on a scale placed one meter away from the mirror of the galvanometer, defined the sensitivity of
A. ammeter
B. voltmeter
C. galvanometer
D. avo-meter
10 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

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