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

Galvanometer is a device used for the detection of

Question # 2

The sources of magnetic field are

Question # 3

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

Question # 4

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

Question # 5

In the region surrounding a current carrying wire:

Question # 6

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

Question # 7

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

Question # 8

The working of galvanometer depends upon torque exerted on a current carrying coil in

Question # 9

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

Question # 10

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

Question # 11

Resistance is measured in

Question # 12

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

Question # 13

A full-scale deflection is obtained in a galvanometer with a current of few

Question # 14

The permeability of free space is measured in:

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

Current is measured in

Question # 17

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

Question # 18

A meter wire carraying a current of 2A is at right angle to the uniform magnetic field of 0.5 Weber/m2The force on the wire is

Question # 19

A long wire wound tightly on a cylindrical core is called:

Question # 20

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 # 21

Centripetal force for electron is given by

Question # 22

The working of all DC electric meters (galvanometers, ammetersand voltmeters) depends upon

Question # 23

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

Question # 24

The unit of flux density is also given by

Question # 25

41 The force experience, when proton projected in a magnetic field with velocity 'v' is

Question # 26

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 # 27

The unit of magnetic flux is

Question # 28

The direction of lines of force depends upon the direction of

Question # 29

A galvanometer is an instrument used to

Question # 30

It is customary represent a current flowing towards the reader by a symbol

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 A shunt resistance parallel to the galvanometer is used to convert it into
A. avometer
B. millimeter
C. voltmeter
D. none of these
2 It is customary represent a current flowing towards the reader by a symbol
A. (x)
B. (+)
C. (.)
D. (-)
3 The force experienced by an electron projected in a magnetic field B with a velocity V is given by
A. F=e(V x B)
B. F= -e(V x B)
C. F= e(B x V)
D. Both a and c
4 The field around a moving charge is called
A. magnetic field
B. conservative field
C. non-conservative field
D. none of these
5

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
6 The SI unit of flux density is.
A. Tesla
B. Weber
C. Gaun
D. Weber/meter
7 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
8 Magnetic induction is also called as:
A.

Ampere’s law

B.

Faraday’s law

C.

Lenz’s law

D.

Newton’s law
9 The unit of flux density is also given by
A. Weber/m2or Wb . m-2
B. Weber/mor Wb . m
C. Weber/mor Wb . m-1
D. Weber or Wb
10 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

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