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

Centripetal force for electron is given by

Question # 2

A shunt resistance parallel to the galvanometer is used to convert it into

Question # 3

A field is uniform and much stronger:

Question # 4

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

Question # 5

When the waveform of one voltage is increasing and that of second is decreasing and vice versa, then phase difference between these voltage is

Question # 6

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

Question # 7

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 # 8

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

Question # 9

The unit of flux density is also given by

Question # 10

Which is modified form of galvanometer

Question # 11

Flurescent screen is a screen where visible spot

Question # 12

The current is measured in

Question # 13

In a moving coil galvanometer, the deflecting couple depends upon

Question # 14

Method "lamp and scale arrangement" used to measure the

Question # 15

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

Question # 16

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

Question # 17

The SI unit of magnetic permeability is

Question # 18

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

Question # 19

The current sensitivity of the galvanometer is

Question # 20

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

Question # 21

The pointer of a magnetic compass:

Question # 22

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

Question # 23

Current is measured in

Question # 24

Avo-meter is used of measure the

Question # 25

A beam of electrons is provided by an

Question # 26

The strength of magnetic field around the current conductor is

Question # 27

Weber is a unit of

Question # 28

Resistance is measured in

Question # 29

The permeability of free space is measured in:

Question # 30

Magnetic lines of force:

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The current sensitivity of the galvanometer is
A. C/BAN
B. BAN/C
C. CAN/B
D. CBN/A
2 F = I(L x B) is a
A. vector
B. scalar
C. unit vector
D. none of these
3

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
4 The magnetic field outside the solenoid due to current is
A. strong
B. zero
C. weak
D. uniform
5 The direction of lines of force depends upon the direction of
A. voltage
B. current
C. charges
D. none of these
6 Galvanometer is a device used for the detection of
A. voltage
B. current
C. temperature
D. pressure
7 NmA-1 is commonly called:
A. Weber
B. Apmere
C. Guass
D. Coulomb
8 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
9 A current carrying conductor sets up its own:
A.

Electric field

B.

Nuclear field

C.

Magnetic field

D.

Both (A) and (C)
10 When charged particle is projected perpendicular to a uniform magnetic field its trajectory is
A. circular
B. elliptical
C. cycloid
D. straight line

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