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 unit of magnetic flux is

Question # 2

For the conversion of galvanometer into voltmeter, we connect a

Question # 3

The torque per unit twist of coil is called

Question # 4

When a suitable small resistance is put in parallel with the galvanometer coil, it is converted into

Question # 5

In the region surrounding a current carrying wire:

Question # 6

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 # 7

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

Question # 8

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

Question # 9

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

Question # 10

The SI unit of flux density is.

Question # 11

Electron gun consist of

Question # 12

The unit of flux density is also given by

Question # 13

The permeability of free space is measured in:

Question # 14

The angle of deflection of coil can be measured by the

Question # 15

Magnetic flux passing through the an element of are A placed perpendicular to a uniform magnetic field Bis:

Question # 16

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

Question # 17

A voltmeter is used to measure the

Question # 18

The force acting on a charge moving in a magnetic field

Question # 19

Which one of the following relations is correct?

Question # 20

(CRO) Cathode ray oscilloscope is a device used for high speed

Question # 21

Ammeter is used to measure

Question # 22

The CRO is used for displaying the waveform of a given

Question # 23

The magnetic force exerted on an electron moving with velocity 'v' at right angle to the magnetic field is given by

Question # 24

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

Question # 25

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 # 26

The magnetic field outside the solenoid due to current is

Question # 27

The vector representation of force experience give the direction of

Question # 28

A current carrying conductor sets up its own:

Question # 29

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

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 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
2 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
3 The SI unit of magnetic permeability is
A. WB A-1m-1
B. WB mA-1
C. WB Am-1
D. None of these
4 A shunt resistance parallel to the galvanometer is used to convert it into
A. avometer
B. millimeter
C. voltmeter
D. none of these
5 Magnetic flux passing through a element whose vector area makes an angle0º with lines of magnetic force is:
A. BACosѲ

B. Zero
C. BA
D. BA sinѲ
6

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
7 Magnetic flux passing through the an element of are A placed perpendicular to a uniform magnetic field Bis:
A. Maximum
B. Minimum
C. Zero
D. Very small
8

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

Circular and endless

B.

Oval in shape and endless

C.

Straight

D.

Parabolic
9 When an electron enters in a magnetic field right angle to its motion, the magnitude of its velocity will be
A. changed
B. zero
C. unchanged
D. none of these
10 Lorentz force is defined as
A. q(E + V x B)
B. q(E x B + V)
C. q(E x V + B)
D. q(E x B)

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