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

A solenoid is a coil of wire which is:

Question # 2

The vector representation of force experience give the direction of

Question # 3

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 # 4

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 # 5

Magnetic induction is also called as:

Question # 6

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

Question # 7

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

Question # 8

The SI unit of magnetic permeability is

Question # 9

F = I(L x B) is a

Question # 10

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

Question # 11

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

Question # 12

The force experienced by a single charge carrier moving with velocity 'v' i magnetic field of strength 'B' is given by

Question # 13

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

Question # 14

A voltmeter is used to measure the

Question # 15

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

Question # 16

The torque per unit twist of coil is called

Question # 17

A charged particle moving at right angle to the magnetic field will experience

Question # 18

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

Question # 19

The gavanometer constant of a moving coil galvanometer is given by

Question # 20

Weber is a unit of

Question # 21

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

Question # 22

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

Question # 23

The magnetic field inside a solenoid can be increased by:

Question # 24

The sources of magnetic field are

Question # 25

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

Question # 26

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 # 27

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 # 28

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 # 29

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

Question # 30

magnetic field is a:

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
2 Current is measured in
A. volts
B. watt
C. ohm
D. ampere
3 (CRO) Cathode ray oscilloscope is a device used for high speed
A. velocity
B. graph plotting
C. time-velocity
D. none of these
4 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
5 The current is measured in
A. volts
B. watt
C. ampere
D. ohm
6 Which is modified form of galvanometer
A. potentiometer
B. battery
C. voltmeter
D. slide wire bridge
7 Avo-meter is used of measure the
A. current, voltage
B. voltage, resistance
C. resistance, current
D. current, voltage and resistance
8 Galvanometer is a device used for the detection of
A. voltage
B. current
C. temperature
D. pressure
9 Charge to mass ratio (e/m) of an electron is given by the relation
A. e/m = 2V/Br2
B. e/m = 2V/B2r
C. e/m = 2V/B2r2
D. e/m = V/2B2r2
10 if the field is directed along the normal to the area, then flux is:
A.

Maximum

B.

Equal to zero

C.

Equal to BA

D.

Minimum

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