ECAT Pre Computer Science Chapter 14 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 14 Electromagnetism

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

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ECAT Physics Chapter 14 Electromagnetism

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Question # 1

A magnetic force on an electron travelling with 108ms-1parallel to a field of strength 1 Wb m-2is

Question # 2

A galvanometer is an instrument used to

Question # 3

Magnetic flux and flux density are related by

Question # 4

The SI unit of magnetic permeability is

Question # 5

Magnetic induction is also called as:

Question # 6

Weber is a unit of

Question # 7

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

Question # 8

A long wire wound tightly on a cylindrical core is called:

Question # 9

The field around a moving charge is called

Question # 10

A resistance used in galvanometer to make it voltmeter is called

Question # 11

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

Question # 12

Resistance is measured in

Question # 13

CRO deflects the beam of

Question # 14

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

Question # 15

The force experienced by an electron projected in a magnetic field B with a velocity V is given by

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
2 F = I(L x B) is a
A. vector
B. scalar
C. unit vector
D. none of these
3 Which is modified form of galvanometer
A. potentiometer
B. battery
C. voltmeter
D. slide wire bridge
4 The CRO deflects the beam of electrons, when they passes through uniform
A. electric field
B. gravitational field
C. magnetic flax
D. magnetic field
5 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
6 The current is measured in
A. volts
B. watt
C. ampere
D. ohm
7 How many number of anodes used in electron gun
A. one
B. two
C. three
D. six
8

Amperean path is a:
A.

Closed path

B.

Rectangular path

C.

Circular path

D.

Any of above
9

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
10 It is customary represent a current flowing towards the reader by a symbol
A. (x)
B. (+)
C. (.)
D. (-)

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