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 flux is.

Question # 2

The sources of magnetic field are

Question # 3

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

Question # 4

Current is measured in

Question # 5

A resistance used in galvanometer to make it voltmeter is called

Question # 6

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

Question # 7

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

Question # 8

Ammeter is used to measure

Question # 9

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

Question # 10

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

Question # 11

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

Question # 12

The unit of flux density is also given by

Question # 13

The magnetic field inside a solenoid can be increased by:

Question # 14

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 # 15

The strength of magnetic field around the current conductor is

Question # 16

Method "lamp and scale arrangement" used to measure the

Question # 17

Flurescent screen is a screen where visible spot

Question # 18

The direction of lines of force depends upon the direction of

Question # 19

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

Question # 20

The SI unit of magnetic induction is

Question # 21

The magnetic field outside the solenoid due to current is

Question # 22

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

Question # 23

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

Question # 24

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 # 25

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

Question # 26

The current sensitivity of the galvanometer is

Question # 27

In the region surrounding a current carrying wire:

Question # 28

Lorentz force is defined as

Question # 29

Total number of turns on 0.15 m length solenoid is 300. the value of n is:

Question # 30

Resistance is measured in

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 A resistance used in galvanometer to make it voltmeter is called
A. shunt resistance
B. high resistance
C. zero resistance
D. none of these
2 Strength of magnetic field is measured in SI units, in:
A. N
B. N/Am
C. Am/N
D. Nm/A
3 Magnetic induction is also called as:
A.

Ampere’s law

B.

Faraday’s law

C.

Lenz’s law

D.

Newton’s law
4 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
5 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
6 In a moving coil galvanometer, the deflecting couple depends upon
A. area of the coil
B. number of turns of coil
C. value of magnetic field
D. all of the above
7 magnetic field is a:
A.

Vector quantity

B.

Scalar quantity

C.

Scalar as well as scalar quantity

D.

Any of (A) or (B)
8 The total number of lines of magnetic induction pasing through a surface perpendicular to the magnetic field is called
A. magnetic flux
B. magnetic flux density
C. magnetic induction
D. magnetic field intensity
9 A charged particle moving at right angle to the magnetic field will experience
A. minimum force
B. maximum force
C. zero
D. moderate force
10 Avo-meter is used of measure the
A. current, voltage
B. voltage, resistance
C. resistance, current
D. current, voltage and resistance

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