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

Question # 2

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

Question # 3

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

Question # 4

Electron gun consist of

Question # 5

Tesla is the unit of

Question # 6

CRO deflects the beam of

Question # 7

The force experienced by a single charge carrier moving with velocity 'v' i magnetic field of strength 'B' is given by

Question # 8

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 # 9

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 # 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

The SI unit of magnetic induction is

Question # 12

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

Question # 13

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

Question # 14

Method "lamp and scale arrangement" used to measure the

Question # 15

The direction of lines of force depends upon the direction of

Question # 16

magnetic field is a:

Question # 17

The force acting as one meter length of the conductor placed at right angle to the magnetic field, when one A current is passing through it, defines the

Question # 18

Current is measured in

Question # 19

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

Question # 20

The gavanometer constant of a moving coil galvanometer is given by

Question # 21

Avo-meter is used of measure the

Question # 22

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

Question # 23

Magnetic induction is also called as:

Question # 24

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 # 25

To convert galvanometer into ammeter we connect

Question # 26

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

Question # 27

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

Question # 28

For the conversion of galvanometer into voltmeter, we connect a

Question # 29

The permeability of free space is measured in:

Question # 30

The straight current carrying conductor experiences maximum force in a uniform magnetic field when it is placed

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The force experienced by a single charge carrier moving with velocity 'v' i magnetic field of strength 'B' is given by
A. F =q(v/B)
B. F=q2(v x B)
C. F=q(v x B)
D. F= vx B
2 A current carrying conductor sets up its own:
A.

Electric field

B.

Nuclear field

C.

Magnetic field

D.

Both (A) and (C)
3 The working of all DC electric meters (galvanometers, ammetersand voltmeters) depends upon
A. Heating effect of current
B. Chemical effect of current
C. Magnetic effect of current
D. Electromagnetic effect of current
4 The most suitable material for permanent magnet is
A. cobalt
B. iron
C. steel
D. alaminium
5 The current sensitivity of the galvanometer is
A. C/BAN
B. BAN/C
C. CAN/B
D. CBN/A
6 The CRO is used for displaying the waveform of a given
A. current
B. voltage
C. both of them
D. none of them
7 A beam of electrons is provided by an
A. electron gun
B. Suppray
C. Injection
D. None of these
8 In the region surrounding a current carrying wire:
A. A magnetic field is setup

B.

The lines of force are elliptical

C.

Direction of lines of forces depends upon direction of current

D.

Both (A) and (C)
9 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
10 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
A. n/AL
B. Al/n
C. nAL
D. nA/L

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