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

Question # 2

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

Question # 3

A galvanometer is an instrument used to

Question # 4

How many number of anodes used in electron gun

Question # 5

magnetic field is a:

Question # 6

For the conversion of galvanometer into voltmeter, we connect a

Question # 7

A beam of electrons is provided by an

Question # 8

The magnetic field inside a solenoid can be increased by:

Question # 9

Current is measured in

Question # 10

The force acting on a charge moving in a magnetic field

Question # 11

The magnetic field outside the solenoid due to current is

Question # 12

Flurescent screen is a screen where visible spot

Question # 13

Avo-meter is used of measure the

Question # 14

Magnetic induction is also called as:

Question # 15

The direction of lines of force depends upon the direction of

Question # 16

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

Question # 17

The pointer of a magnetic compass:

Question # 18

In the region surrounding a current carrying wire:

Question # 19

A relationship between Gauses of magnetic induction and Tesla(T) is given by

Question # 20

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

Question # 21

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

Question # 22

The current sensitivity of the galvanometer is

Question # 23

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 # 24

The SI unit of flux density is

Question # 25

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

Question # 26

The unit of flux density is also given by

Question # 27

Hold the solenoid in the right hand with fingers curling in the direction of current. The direction of the field will be given by:

Question # 28

The CRO is used for displaying the waveform of a given

Question # 29

A charged particle moving at right angle to the magnetic field will experience

Question # 30

The straight current carrying conductor experiences maximum force in a uniform magnetic field when it is placed

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
2

Amperean path is a:
A.

Closed path

B.

Rectangular path

C.

Circular path

D.

Any of above
3 The SI unit of magnetic flux is.
A. weber
B. Nm-1A-1
C. tesla
D. gauss
4 In the region surrounding a current carrying wire:
A. A magnetic field is setup

B.

The lines of force are elliptical

C.

Direction of lines of forces depends upon direction of current

D.

Both (A) and (C)
5 The angle of deflection of coil can be measured by the
A. one method
B. three method
C. two method
D. none of these
6 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
7 In the formula B= µ̻ nl, the symbol n denotes:
A.

Total number of turns of solenoid

B.

Number of turns per unit length

C.

Number of turns per unit volume

D.

Numbers of turns per unit area
8 Method "lamp and scale arrangement" used to measure the
A. angle of deflection
B. restoring torque
C. magnetic field strength
D. current
9 Tesla is the unit of
A. Magnetic induction or flux density
B. Magnetic flux
C. Self inductance
D. None of these
10 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

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