ECAT Pre General Science Physics Chapter 14 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 14 Electromagnetism

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

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ECAT Pre General Science Physics Chapter 14 Electromagnetism

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Question # 1

It is customary represent a current flowing towards the reader by a symbol

Question # 2

A voltmeter is used to measure the

Question # 3

Magnetic flux passing through a element whose vector area makes an angle0º with lines of magnetic force is:

Question # 4

To convert galvanometer into ammeter we connect

Question # 5

Lorentz force is defined as

Question # 6

magnetic field is a:

Question # 7

The field around a moving charge is called

Question # 8

41 The force experience, when proton projected in a magnetic field with velocity 'v' is

Question # 9

In the region surrounding a current carrying wire:

Question # 10

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

Question # 11

The force acting on a charge moving in a magnetic field

Question # 12

The force experienced by a single charge carrier moving with velocity 'v' i magnetic field of strength 'B' is given by

Question # 13

For the conversion of galvanometer into voltmeter, we connect a

Question # 14

A field is uniform and much stronger:

Question # 15

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

Question # 16

The SI unit of magnetic permeability is

Question # 17

Magnetic induction is also called as:

Question # 18

The SI unit of flux density is

Question # 19

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

Question # 20

Which is modified form of galvanometer

Question # 21

Current is measured in

Question # 22

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

Question # 23

Method "lamp and scale arrangement" used to measure the

Question # 24

The angle of deflection of coil can be measured by the

Question # 25

A resistance used in voltmeter is called

Question # 26

For measuring large currents, an ordinary galvanometer cannot be used without proper, then both relates with each other as

Question # 27

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

Question # 28

Galvanometer is a device used for the detection of

Question # 29

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

Question # 30

The CRO deflects the beam of electrons, when they passes through uniform

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
A. 5N
B. 4N
C. 1.5N
D. 6N
2 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
3 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
4 The voltage increases linearly with
A. time
B. velocity
C. acceleration
D. torque
5 Which one of the following relations is correct?
A. 1 Wb-m2= Nm-1A-1
B. 1 tesla = 104 gausses
C. 1 Wb-m2= 1 tesla
D. All of the above
6 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
7 Ammeter is used to measure
A. voltage
B. resistance
C. voltage and current
D. current
8 magnetic field is a:
A.

Vector quantity

B.

Scalar quantity

C.

Scalar as well as scalar quantity

D.

Any of (A) or (B)
9 When some compass needles are placed on a card board along a circle with the center at the wire, they will
A.

Point the direction of N-S

B.

Set themselves tangential to the circle

C.

Point in the direction of E-W

D.

None of these
10 A current carrying conductor is placed at right angle to the magnetic field. The magnetic force experienced by the conductor is
A. minimum
B. maximum
C. zero
D. none of these

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