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

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

Question # 2

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

Question # 3

The direction of lines of force depends upon the direction of

Question # 4

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

Question # 5

The current is measured in

Question # 6

Which is modified form of galvanometer

Question # 7

Which one of the following relations is correct?

Question # 8

How many number of anodes used in electron gun

Question # 9

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

Question # 10

A resistance used in galvanometer to make it voltmeter is called

Question # 11

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

Question # 12

The current in microamperes required to produce one millimeter deflection on a scale placed one meter away from the mirror of the galvanometer, defined the sensitivity of

Question # 13

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

Question # 14

A resistance used in voltmeter is called

Question # 15

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

Question # 16

The current sensitivity of the galvanometer is

Question # 17

Ammeter is used to measure

Question # 18

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

Question # 19

A galvanometer is an instrument used to

Question # 20

A current carrying conductor is placed at right angle to the magnetic field. The magnetic force experienced by the conductor is

Question # 21

A shunt resistance parallel to the galvanometer is used to convert it into

Question # 22

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

Question # 23

The gavanometer constant of a moving coil galvanometer is given by

Question # 24

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

Question # 25

Magnetic flux and flux density are related by

Question # 26

Magnetic induction is also called as:

Question # 27

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

Question # 28

Weber is a unit of

Question # 29

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 # 30

Strength of magnetic field is measured in SI units, in:

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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 A long wire wound tightly on a cylindrical core is called:
A. Potentiometer
B. Solenoid
C. Toroid
D. Wheat and stone bridge
3 When current passes through a solenoid coil, it behaves like a
A. loop
B. circle
C. bar magnet
D. none of these
4 Magnetic induction is also called as:
A.

Ampere’s law

B.

Faraday’s law

C.

Lenz’s law

D.

Newton’s law
5 'K' is the proportionality constant of force experienced by conductor. What is the value of 'K' in SI units?
A. 0
B. 1
C. 0.5
D. -1
6 The voltage increases linearly with
A. time
B. velocity
C. acceleration
D. torque
7 Which is modified form of galvanometer
A. potentiometer
B. battery
C. voltmeter
D. slide wire bridge
8 41 The force experience, when proton projected in a magnetic field with velocity 'v' is
A. +e(v x B)
B. -C(V x B)
C. +e2(v x B)
D. -e(v2x B)
9 A galvanometer in which the coil comes to rest quickly after the current passed through it, or the current stopped form flowing through it, is called
A. dead beat galvanometer
B. stable galvanometer
C. shunt galvanometer
D. sensitive galvanomter
10 A shunt resistance parallel to the galvanometer is used to convert it into
A. avometer
B. millimeter
C. voltmeter
D. none of these

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