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

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

Question # 2

Gauss(G) is smaller unit of magnetic induction which is related to tesla(T) as

Question # 3

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

Question # 4

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

Question # 5

Ammeter is used to measure

Question # 6

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 # 7

The torque per unit twist of coil is called

Question # 8

Weber is a unit of

Question # 9

The SI unit of magnetic permeability is

Question # 10

the current is pass through the straight wire. The magnetic field established around it has its lines of force:

Question # 11

When the charged particle is projected at right angles to the field, then experienced by it will be:

Question # 12

The direction of lines of force depends upon the direction of

Question # 13

In a moving coil galvanometer, the deflecting couple depends upon

Question # 14

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

Question # 15

Magnetic lines of force:

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
2 The current is measured in
A. volts
B. watt
C. ampere
D. ohm
3 The angle of deflection of coil can be measured by the
A. one method
B. three method
C. two method
D. none of these
4 The strength of magnetic field around the current conductor is
A. Smaller near the conductor
B. Greater near the conductor
C. Greater at the large distance from the conductor
D. Constant near and away from the conductor
5 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
6 Ammeter is used to measure
A. voltage
B. resistance
C. voltage and current
D. current
7 Magnetic flux and flux density are related by
A. Flux density = flux x area
B. Flux density = flux / area
C. Flux density = flux - area
D. None of these
8 A charged particle moving at right angle to the magnetic field will experience
A. minimum force
B. maximum force
C. zero
D. moderate force
9 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
10 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

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