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

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 # 2

The force exerted on a conductor of length L, carrying current I when placed in a magnetic field B is given by

Question # 3

Resistance is measured in

Question # 4

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

Question # 5

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

Question # 6

The pointer of a magnetic compass:

Question # 7

NmA-1 is commonly called:

Question # 8

The current is measured in

Question # 9

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

Question # 10

The current sensitivity of the galvanometer is

Question # 11

Ammeter is used to measure

Question # 12

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

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

The unit of magnetic flux is

Question # 15

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

Question # 16

A resistance used in galvanometer to make it voltmeter is called

Question # 17

Galvanometer is a device used for the detection of

Question # 18

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

Question # 19

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

Question # 20

A current carrying conductor sets up its own:

Question # 21

The SI unit of magnetic induction is

Question # 22

The SI unit of flux density is.

Question # 23

The angle of deflection of coil can be measured by the

Question # 24

Which one of the following relations is correct?

Question # 25

Tesla is the unit of

Question # 26

CRO deflects the beam of

Question # 27

In order to make a voltmeter, high resistance is connected with galvanometer, in

Question # 28

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

Question # 29

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

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 To convert galvanometer into ammeter we connect
A. small resistance in parallel with galvanometer
B. small resistance in series with galvanometer
C. high resistance in series with galvanometer
D. high resistance in parallel with galvanometer
2 Ammeter is used to measure
A. voltage
B. resistance
C. voltage and current
D. current
3 '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
4 A beam of electrons is provided by an
A. electron gun
B. Suppray
C. Injection
D. None of these
5 Electron gun consist of
A. three anodes
B. heating cathode
C. three anodes
D. three anodes , heating cathode, grid
6 The force exerted on a conductor of length L, carrying current I when placed in a magnetic field B is given by
A. F=IB/L
B. F= L x B/I
C. F = IL x B
D. F = IL . B
7 Strength of magnetic field is measured in SI units, in:
A. N
B. N/Am
C. Am/N
D. Nm/A
8 The current is measured in
A. volts
B. watt
C. ampere
D. ohm
9 The sources of magnetic field are
A. isolated magnetic poles
B. charges at rest
C. charges in motion
D. none of these
10 Which one of the following relations is correct?
A. 1 Wb-m2= Nm-1A-1
B. 1 tesla = 104 gausses
C. 1 Wb-m2= 1 tesla
D. All of the above

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