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

The gavanometer constant of a moving coil galvanometer is given by

Question # 2

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

Question # 3

The unit of magnetic flux is

Question # 4

Ammeter is used to measure

Question # 5

Avo-meter is used of measure the

Question # 6

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

Question # 7

In a moving coil galvanometer, the deflecting couple depends upon

Question # 8

Weber is a unit of

Question # 9

A field is uniform and much stronger:

Question # 10

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

Question # 11

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

Question # 12

A full-scale deflection is obtained in a galvanometer with a current of few

Question # 13

Flurescent screen is a screen where visible spot

Question # 14

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

Question # 15

Method "lamp and scale arrangement" used to measure the

Question # 16

The working of all DC electric meters (galvanometers, ammetersand voltmeters) depends upon

Question # 17

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

Question # 18

The force acting on a charge moving in a magnetic field

Question # 19

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 # 20

Current is measured in

Question # 21

The angle of deflection of coil can be measured by the

Question # 22

Lorentz force is defined as

Question # 23

The strength of magnetic field around the current conductor is

Question # 24

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

Question # 25

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

Question # 26

The magnetic field outside the solenoid due to current is

Question # 27

The unit of flux density is also given by

Question # 28

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

Question # 29

magnetic field is a:

Question # 30

A current carrying conductor sets up its own:

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The magnetic field in the middle of a solenoid due to current is
A. weak
B. strong and uniform
C. none-uniform
D. zero
2 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
3 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
4 The straight current carrying conductor experiences maximum force in a uniform magnetic field when it is placed
A. parallel to the field
B. Perpendicular to the field
C. At an angle of 45 to the field
D. None of the above
5 The torque per unit twist of coil is called
A. proportionality constant
B. gravitational constant
C. boltzman constant
D. coupling constant
6 if the field is directed along the normal to the area, then flux is:
A.

Maximum

B.

Equal to zero

C.

Equal to BA

D.

Minimum
7 Current is measured in
A. volts
B. watt
C. ohm
D. ampere
8 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
9

The pointer of a magnetic compass:
A.

Is affected only by permanent magnets

B.

Align itself parallel to the applied magnetic field

C.

Vibrates in the magnetic field of the current

D.

Aligns itself perpendicular to the magnetic field
10 Tesla is the unit of
A. Magnetic induction or flux density
B. Magnetic flux
C. Self inductance
D. None of these

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