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

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

Question # 2

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

Question # 3

The torque per unit twist of coil is called

Question # 4

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

Question # 5

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

Question # 6

Ammeter is used to measure

Question # 7

How many number of anodes used in electron gun

Question # 8

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

Question # 9

In the region surrounding a current carrying wire:

Question # 10

A resistance used in voltmeter is called

Question # 11

The magnetic field outside the solenoid due to current is

Question # 12

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

Question # 13

In a moving coil galvanometer, the deflecting couple depends upon

Question # 14

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

Question # 15

The vector representation of force experience give the direction of

Question # 16

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

Question # 17

The force experienced by charged particle is maximum, if it moves

Question # 18

To convert galvanometer into ammeter we connect

Question # 19

The SI unit of magnetic permeability is

Question # 20

Galvanometer is a device used for the detection of

Question # 21

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 # 22

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

Question # 23

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

Question # 24

Resistance is measured in

Question # 25

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 # 26

A voltmeter is used to measure the

Question # 27

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

Question # 28

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

Question # 29

The SI unit of magnetic induction is

Question # 30

Lorentz force is defined as

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Gauss(G) is smaller unit of magnetic induction which is related to tesla(T) as
A. IT = 10-4 G
B. IT = 105G
C. IT = 103G
D. IT = 104G
2 The magnetic field inside a solenoid can be increased by:
A. Increasing n
B. Decreasing I
C. Increasing I
D. By using iron core within solenoid
3 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
4 The magnetic force exerted on an electron moving with velocity 'v' at right angle to the magnetic field is given by
A. F=eVB
B. F=e2V/B
C. F=e/VB
D. F=B2/ev
5 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
6 A shunt resistance parallel to the galvanometer is used to convert it into
A. avometer
B. millimeter
C. voltmeter
D. none of these
7 Electron gun consist of
A. three anodes
B. heating cathode
C. three anodes
D. three anodes , heating cathode, grid
8 Hold the solenoid in the right hand with fingers curling in the direction of current. The direction of the field will be given by:
A.

Thumb

B.

Curled fingers

C.

Middle finger

D.

Arm of right hand
9 When charged particle is projected perpendicular to a uniform magnetic field its trajectory is
A. circular
B. elliptical
C. cycloid
D. straight line
10 The SI unit of magnetic permeability is
A. WB A-1m-1
B. WB mA-1
C. WB Am-1
D. None of these

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