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

Lorentz force is defined as

Question # 2

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

Question # 3

In a straight current carrying conductor, the direction of magnetic field can be found by

Question # 4

Magnetic flux and flux density are related by

Question # 5

Resistance is measured in

Question # 6

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

Question # 7

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

Question # 8

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

Question # 9

A resistance used in galvanometer to make it voltmeter is called

Question # 10

Weber is a unit of

Question # 11

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

Question # 12

A magnetic force on an electron travelling with 108ms-1parallel to a field of strength 1 Wb m-2is

Question # 13

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

Question # 14

A current carrying conductor sets up its own:

Question # 15

F = I(L x B) is a

Question # 16

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

Question # 17

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

Question # 18

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

Question # 19

How many number of anodes used in electron gun

Question # 20

Flurescent screen is a screen where visible spot

Question # 21

In the region surrounding a current carrying wire:

Question # 22

Tesla is the unit of

Question # 23

A field is uniform and much stronger:

Question # 24

Magnetic lines of force:

Question # 25

The SI unit of magnetic induction is

Question # 26

The gavanometer constant of a moving coil galvanometer is given by

Question # 27

Centripetal force for electron is given by

Question # 28

A voltmeter is used to measure the

Question # 29

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

Question # 30

If the value of galvanometer constant k = C/BAN is made small, the galvanometer can be made

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Current is measured in
A. volts
B. watt
C. ohm
D. ampere
2 magnetic field is a:
A.

Vector quantity

B.

Scalar quantity

C.

Scalar as well as scalar quantity

D.

Any of (A) or (B)
3 Galvanometer is a device used for the detection of
A. voltage
B. current
C. temperature
D. pressure
4 Magnetic induction is also called as:
A.

Ampere’s law

B.

Faraday’s law

C.

Lenz’s law

D.

Newton’s law
5 A galvanometer is an instrument used to
A. measure voltage across a circuit
B. detect current in a circuit
C. measure current flowing through a circuit
D. none of these
6 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
7 A long wire wound tightly on a cylindrical core is called:
A. Potentiometer
B. Solenoid
C. Toroid
D. Wheat and stone bridge
8 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
9 A field is uniform and much stronger:
A.

Inside a long solenoid

B.

Outside a long solenoid

C.

At the end of a long solenoid

D.

At the central point of long solenoid
10 '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

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