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

Electron gun consist of

Question # 2

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

Question # 3

The current in microamperes required to produce one millimeter deflection on a scale placed one meter away from the mirror of the galvanometer, defined the sensitivity of

Question # 4

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

Question # 5

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

Question # 6

Gauss(G) is smaller unit of magnetic induction which is related to tesla(T) as

Question # 7

When current passes through a solenoid coil, it behaves like a

Question # 8

'K' is the proportionality constant of force experienced by conductor. What is the value of 'K' in SI units?

Question # 9

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

Question # 10

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

Question # 11

The force acting on a charge moving in a magnetic field

Question # 12

The permeability of free space is measured in:

Question # 13

The gavanometer constant of a moving coil galvanometer is given by

Question # 14

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

Question # 15

When some compass needles are placed on a card board along a circle with the center at the wire, they will

Question # 16

Centripetal force for electron is given by

Question # 17

The direction of lines of force depends upon the direction of

Question # 18

The SI unit of flux density is.

Question # 19

When the charged particle is projected at right angles to the field, then experienced by it will be:

Question # 20

The magnetic field inside a solenoid can be increased by:

Question # 21

The unit of flux density is also given by

Question # 22

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

Question # 23

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

Question # 24

The sources of magnetic field are

Question # 25

The strength of magnetic field around the current conductor is

Question # 26

When charged particle is projected perpendicular to a uniform magnetic field its trajectory is

Question # 27

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

Question # 28

Which is modified form of galvanometer

Question # 29

The current is measured in

Question # 30

In the region surrounding a current carrying wire:

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 If the number of turns of a solenoid (carrying a steady current I) is doubled without changing the length of a solenoid, then magnetic field:
A. Becomes Half
B. Becomes double
C. Is not affected
D. Becomes one fourth
2 The sources of magnetic field are
A. isolated magnetic poles
B. charges at rest
C. charges in motion
D. none of these
3 A charged particle moving at right angle to the magnetic field will experience
A. minimum force
B. maximum force
C. zero
D. moderate force
4

Amperean path is a:
A.

Closed path

B.

Rectangular path

C.

Circular path

D.

Any of above
5 The current sensitivity of the galvanometer is
A. C/BAN
B. BAN/C
C. CAN/B
D. CBN/A
6 The magnetic field in the middle of a solenoid due to current is
A. weak
B. strong and uniform
C. none-uniform
D. zero
7 In order to make a voltmeter, high resistance is connected with galvanometer, in
A. perpendicular
B. may be paralled or pendicular
C. series
D. none of these
8 The direction of lines of force depends upon the direction of
A. voltage
B. current
C. charges
D. none of these
9 The gavanometer constant of a moving coil galvanometer is given by
A. K=BAN/C
B. K=BN/CA
C. K=NAC/B
D. K=C/BAN
10 If the value of galvanometer constant k = C/BAN is made small, the galvanometer can be made
A. Sensitive
B. Accurate
C. Stable
D. None of these

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