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

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 # 2

Magnetic flux passing through a element whose vector area makes an angle0º with lines of magnetic force is:

Question # 3

Amperean path is a:

Question # 4

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

Question # 5

The magnetic field inside a solenoid can be increased by:

Question # 6

In the region surrounding a current carrying wire:

Question # 7

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

Question # 8

The force experienced by an electron projected in a magnetic field B with a velocity V is given by

Question # 9

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

Question # 10

At a given instant, a photon moves in +x direction in a region where there magnetic field in -z direction. The magnetic force on the proton will be the:

Question # 11

A beam of electrons is provided by an

Question # 12

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

Question # 13

In the expression of force experienced by electron, the direction of both v and B are

Question # 14

The CRO is used for displaying the waveform of a given

Question # 15

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

Question # 16

The force exerted on a conductor of length L, carrying current I when placed in a magnetic field B is given by

Question # 17

The angle of deflection of coil can be measured by the

Question # 18

The strength of magnetic field around the current conductor is

Question # 19

magnetic field is a:

Question # 20

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

Question # 21

A resistance used in voltmeter is called

Question # 22

Electron gun consist of

Question # 23

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

Question # 24

Avo-meter is used of measure the

Question # 25

The current sensitivity of the galvanometer is

Question # 26

The galvanometer can be made sensitive if the value of the factor C/BAN is

Question # 27

Resistance is measured in

Question # 28

Which is modified form of galvanometer

Question # 29

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

Question # 30

The gavanometer constant of a moving coil galvanometer is given by

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 A solenoid is a coil of wire which is:
A.

Short, loosely wound, cylindrical

B.

Long, tightly wound, spherical

C.

Long, loosely wound, cylindrical

D.

Long, tightly wound, cylindrical
2 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
3 The current sensitivity of the galvanometer is
A. C/BAN
B. BAN/C
C. CAN/B
D. CBN/A
4 When the charged particle is projected at right angles to the field, then experienced by it will be:
A. Maximum
B. Zero
C. qvB
D. Both (A) and (B)
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 The force experienced by charged particle is maximum, if it moves
A. parallel to magnetic field
B. perpendicular to magnetic field
C. opposite to the magnetic field
D. none of these
7 The SI unit of magnetic flux is.
A. weber
B. Nm-1A-1
C. tesla
D. gauss
8 (CRO) Cathode ray oscilloscope is a device used for high speed
A. velocity
B. graph plotting
C. time-velocity
D. none of these
9 When current passes through a solenoid coil, it behaves like a
A. loop
B. circle
C. bar magnet
D. none of these
10 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

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