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 SI unit of magnetic induction is tesla which is equal to

Question # 2

The angle of deflection of coil can be measured by the

Question # 3

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

Question # 4

In the expression of force experienced by electron, the direction of both v and B are

Question # 5

Current is measured in

Question # 6

The SI unit of flux density is

Question # 7

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

Question # 8

In the region surrounding a current carrying wire:

Question # 9

Magnetic flux and flux density are related by

Question # 10

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

Question # 11

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

Question # 12

The magnetic field outside the solenoid due to current is

Question # 13

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 # 14

The sources of magnetic field are

Question # 15

A resistance used in galvanometer to make it voltmeter is called

Question # 16

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 # 17

The torque per unit twist of coil is called

Question # 18

Avo-meter is used of measure the

Question # 19

The magnetic field in the middle of a solenoid due to current is

Question # 20

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

Question # 21

The most suitable material for permanent magnet is

Question # 22

CRO deflects the beam of

Question # 23

The SI unit of magnetic permeability is

Question # 24

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 # 25

For the conversion of galvanometer into voltmeter, we connect a

Question # 26

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:

Question # 27

Galvanometer is a device used for the detection of

Question # 28

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

Question # 29

The CRO is used for displaying the waveform of a given

Question # 30

Magnetic flux passing through the an element of are A placed perpendicular to a uniform magnetic field Bis:

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
A. dead beat galvanometer
B. stable galvanometer
C. shunt galvanometer
D. sensitive galvanomter
2 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
3 A beam of electrons is provided by an
A. electron gun
B. Suppray
C. Injection
D. None of these
4 How many number of anodes used in electron gun
A. one
B. two
C. three
D. six
5 A solenoid is a coil of wire which is:
A.

Short, loosely wound, cylindrical

B.

Long, tightly wound, spherical

C.

Long, loosely wound, cylindrical

D.

Long, tightly wound, cylindrical
6 Lorentz force is defined as
A. q(E + V x B)
B. q(E x B + V)
C. q(E x V + B)
D. q(E x B)
7 The CRO is used for displaying the waveform of a given
A. current
B. voltage
C. both of them
D. none of them
8 In a straight current carrying conductor, the direction of magnetic field can be found by
A. right hand rule
B. left hand rule
C. head to tall rule
D. none of these
9 The current sensitivity of the galvanometer is
A. C/BAN
B. BAN/C
C. CAN/B
D. CBN/A
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:
A. -y direction
B. +y direction
C. +z direction
D. -z direction

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