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

Question # 2

Which one of the following relations is correct?

Question # 3

Lorentz force is defined as

Question # 4

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

Question # 5

The current sensitivity of the galvanometer is

Question # 6

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

Question # 7

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 # 8

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

Question # 9

The permeability of free space is measured in:

Question # 10

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

Question # 11

The force acting on a charge moving in a magnetic field

Question # 12

A resistance used in voltmeter is called

Question # 13

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

Question # 14

In the region surrounding a current carrying wire:

Question # 15

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

Question # 16

Avo-meter is used of measure the

Question # 17

When charged particle is projected perpendicular to a uniform magnetic field its trajectory is

Question # 18

The SI unit of magnetic induction is tesla which is equal to

Question # 19

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

Question # 20

The magnetic field outside the solenoid due to current is

Question # 21

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

Question # 22

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

Question # 23

The CRO is used for displaying the waveform of a given

Question # 24

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

Question # 25

NmA-1 is commonly called:

Question # 26

The current is measured in

Question # 27

The voltage increases linearly with

Question # 28

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

Question # 29

Which is modified form of galvanometer

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 The SI unit of flux density is
A. Newton/Amp-meter
B. Newton-m/Ampere
C. Newton-m/Amp2
D. Newton-Amp/meter
2 A galvanometer is an instrument used to
A. measure voltage across a circuit
B. detect current in a circuit
C. measure current flowing through a circuit
D. none of these
3 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
4

Amperean path is a:
A.

Closed path

B.

Rectangular path

C.

Circular path

D.

Any of above
5 The galvanometer can be made sensitive if the value of the factor C/BAN is
A. constant
B. small
C. large
D. none of these
6 In the formula B= µ̻ nl, the symbol n denotes:
A.

Total number of turns of solenoid

B.

Number of turns per unit length

C.

Number of turns per unit volume

D.

Numbers of turns per unit area
7 A charged particle moving at right angle to the magnetic field will experience
A. minimum force
B. maximum force
C. zero
D. moderate force
8 The current in microamperes required to produce one millimeter deflection on a scale placed one meter away from the mirror of the galvanometer, defined the sensitivity of
A. ammeter
B. voltmeter
C. galvanometer
D. avo-meter
9 Weber is a unit of
A. magnetic flux
B. magnetic filed intensity
C. magnetic induction
D. magnetic flux density
10 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

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