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

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

Question # 2

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

Question # 3

Flurescent screen is a screen where visible spot

Question # 4

The force acting as one meter length of the conductor placed at right angle to the magnetic field, when one A current is passing through it, defines the

Question # 5

When the waveform of one voltage is increasing and that of second is decreasing and vice versa, then phase difference between these voltage is

Question # 6

The CRO is used for displaying the waveform of a given

Question # 7

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

Question # 8

The galvanometer can be made sensitive if the value of the factor C/BAN is

Question # 9

A resistance used in galvanometer to make it voltmeter is called

Question # 10

A galvanometer is an instrument used to

Question # 11

The pointer of a magnetic compass:

Question # 12

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

Question # 13

The gavanometer constant of a moving coil galvanometer is given by

Question # 14

The SI unit of magnetic induction is

Question # 15

The e/m of an electron moving in a circular path in a magnetic field is equal to

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 A magnetic force on an electron travelling with 108ms-1parallel to a field of strength 1 Wb m-2is
A. Zero
B. 105 m
C. 10-10N
D. 108N
2 Total number of turns on 0.15 m length solenoid is 300. the value of n is:
A. Greater than 300
B. Smaller than 300
C. Equal to 300
D. Any of (A) or (B)
3 The magnetic field inside a solenoid can be increased by:
A. Increasing n
B. Decreasing I
C. Increasing I
D. By using iron core within solenoid
4 In the expression of force experienced by electron, the direction of both v and B are
A. parallel
B. zero
C. perpendicular
D. none of them
5 In the formula B= µ̻ nl, the symbol n denotes:
A.

Total number of turns of solenoid

B.

Number of turns per unit length

C.

Number of turns per unit volume

D.

Numbers of turns per unit area
6 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
7 Method "lamp and scale arrangement" used to measure the
A. angle of deflection
B. restoring torque
C. magnetic field strength
D. current
8 Ammeter is used to measure
A. voltage
B. resistance
C. voltage and current
D. current
9 magnetic field is a:
A.

Vector quantity

B.

Scalar quantity

C.

Scalar as well as scalar quantity

D.

Any of (A) or (B)
10 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:
A. -y direction
B. +y direction
C. +z direction
D. -z direction

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