ECAT Pre Computer Science Chapter 14 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 14 Electromagnetism

Try The MCQ's Test For ECAT Physics Chapter 14 Electromagnetism

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ECAT Physics Chapter 14 Electromagnetism

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Question # 1

Electron gun consist of

Question # 2

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

Question # 3

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 # 4

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 # 5

Magnetic lines of force:

Question # 6

Amperean path is a:

Question # 7

A resistance used in galvanometer to make it voltmeter is called

Question # 8

Method "lamp and scale arrangement" used to measure the

Question # 9

Galvanometer is a device used for the detection of

Question # 10

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

Question # 11

The CRO deflects the beam of electrons, when they passes through uniform

Question # 12

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

Question # 13

A resistance used in voltmeter is called

Question # 14

The most suitable material for permanent magnet is

Question # 15

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Magnetic lines of force:
A.

Cannot intersect at all

B.

Intersect at infinity

C.

Intersect within magnet

D.

Intersect at Neutral Point
2 In a straight current carrying conductor, the direction of magnetic field can be found by
A. right hand rule
B. left hand rule
C. head to tall rule
D. none of these
3 A current carrying conductor sets up its own:
A.

Electric field

B.

Nuclear field

C.

Magnetic field

D.

Both (A) and (C)
4 When current passes through a solenoid coil, it behaves like a
A. loop
B. circle
C. bar magnet
D. none of these
5 (CRO) Cathode ray oscilloscope is a device used for high speed
A. velocity
B. graph plotting
C. time-velocity
D. none of these
6 Current is measured in
A. volts
B. watt
C. ohm
D. ampere
7 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
8 The force acting on a charge moving in a magnetic field
A. is perpendicular to the both magnetic field and direction of motion
B. is proportional to the magnetic of charges
C. vanishes when the motion is directly opposite to the direction of field
D. all of the above
9 Flurescent screen is a screen where visible spot
A. vanishes
B. is made
C. becomes small and large
D. none of these
10 The SI unit of magnetic permeability is
A. WB A-1m-1
B. WB mA-1
C. WB Am-1
D. None of these

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