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

The sources of magnetic field are

Question # 2

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

Question # 3

A beam of electrons is provided by an

Question # 4

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

Question # 5

Galvanometer is a device used for the detection of

Question # 6

In the region surrounding a current carrying wire:

Question # 7

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

Question # 8

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

Question # 9

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

Question # 10

For measuring large currents, an ordinary galvanometer cannot be used without proper, then both relates with each other as

Question # 11

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

Question # 12

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

Question # 13

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

Question # 14

The unit of magnetic flux is

Question # 15

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

Question # 16

Ammeter is used to measure

Question # 17

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

Question # 18

Centripetal force for electron is given by

Question # 19

A current carrying conductor sets up its own:

Question # 20

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 # 21

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

Question # 22

The force acting on a charge moving in a magnetic field

Question # 23

Strength of magnetic field is measured in SI units, in:

Question # 24

magnetic field is a:

Question # 25

Charge to mass ratio (e/m) of an electron is given by the relation

Question # 26

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

Question # 27

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

Question # 28

Amperean path is a:

Question # 29

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 # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 For the conversion of galvanometer into voltmeter, we connect a
A. small resistance in series with galvanometer
B. small resistance in parallel with galvanometer
C. high resistance in parallel with galvanometer
D. high resistance series with galvanometer
2 The SI unit of magnetic induction is
A. Gauses
B. Tesla
C. Weber
D. Weber2
3 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
4 'K' is the proportionality constant of force experienced by conductor. What is the value of 'K' in SI units?
A. 0
B. 1
C. 0.5
D. -1
5 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
6 The most suitable material for permanent magnet is
A. cobalt
B. iron
C. steel
D. alaminium
7 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
8 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
9 The straight current carrying conductor experiences maximum force in a uniform magnetic field when it is placed
A. parallel to the field
B. Perpendicular to the field
C. At an angle of 45 to the field
D. None of the above
10 A current carrying conductor sets up its own:
A.

Electric field

B.

Nuclear field

C.

Magnetic field

D.

Both (A) and (C)

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