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

Question # 2

To convert galvanometer into ammeter we connect

Question # 3

The magnetic field in the middle of a solenoid due to current is

Question # 4

Magnetic flux and flux density are related by

Question # 5

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

Question # 6

Electron gun consist of

Question # 7

Ammeter is used to measure

Question # 8

if the field is directed along the normal to the area, then flux is:

Question # 9

The force acting on a charge moving in a magnetic field

Question # 10

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

Question # 11

The strength of magnetic field around the current conductor is

Question # 12

Avo-meter is used of measure the

Question # 13

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 # 14

The vector representation of force experience give the direction of

Question # 15

A beam of electrons is provided by an

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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 unit of magnetic flux is
A. Weber-m2
B. Weber-m3
C. Henry
D. Weber
3 If volume of wire is 'AL' and there are 'n' numbers of charge carriers per unit volume, then the total number of charge carriers are
A. n/AL
B. Al/n
C. nAL
D. nA/L
4 Hold the solenoid in the right hand with fingers curling in the direction of current. The direction of the field will be given by:
A.

Thumb

B.

Curled fingers

C.

Middle finger

D.

Arm of right hand
5 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
6 The SI unit of magnetic induction is
A. Gauses
B. Tesla
C. Weber
D. Weber2
7 For the conversion of galvanometer into voltmeter, we connect a
A. small resistance in series with galvanometer
B. small resistance in parallel with galvanometer
C. high resistance in parallel with galvanometer
D. high resistance series with galvanometer
8 Current is measured in
A. volts
B. watt
C. ohm
D. ampere
9 Electron gun consist of
A. three anodes
B. heating cathode
C. three anodes
D. three anodes , heating cathode, grid
10 The galvanometer can be made sensitive if the value of the factor C/BAN is
A. constant
B. small
C. large
D. none of these

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