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

Current is measured in

Question # 2

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

Question # 3

The sources of magnetic field are

Question # 4

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

Question # 5

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

Question # 6

Flurescent screen is a screen where visible spot

Question # 7

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

Question # 8

A magnetic force on an electron travelling with 108ms-1parallel to a field of strength 1 Wb m-2is

Question # 9

A galvanometer is an instrument used to

Question # 10

For measuring large currents, an ordinary galvanometer cannot be used without proper, then both relates with each other as

Question # 11

The current is measured in

Question # 12

Which one of the following relations is correct?

Question # 13

The SI unit of magnetic induction is

Question # 14

A voltmeter is used to measure the

Question # 15

The most suitable material for permanent magnet is

Question # 16

Galvanometer is a device used for the detection of

Question # 17

Lorentz force is defined as

Question # 18

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

Question # 19

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

Question # 20

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

Question # 21

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 # 22

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

Question # 23

Electron gun consist of

Question # 24

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 # 25

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 # 26

The CRO deflects the beam of electrons, when they passes through uniform

Question # 27

F = I(L x B) is a

Question # 28

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

Question # 29

Which is modified form of galvanometer

Question # 30

The magnetic field outside the solenoid due to current is

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 A long wire wound tightly on a cylindrical core is called:
A. Potentiometer
B. Solenoid
C. Toroid
D. Wheat and stone bridge
2 The SI unit of magnetic flux is.
A. weber
B. Nm-1A-1
C. tesla
D. gauss
3 Magnetic lines of force:
A.

Cannot intersect at all

B.

Intersect at infinity

C.

Intersect within magnet

D.

Intersect at Neutral Point
4 A resistance used in voltmeter is called
A. shunt resistance
B. high resistance
C. low resistance
D. zero resistance
5 Magnetic flux and flux density are related by
A. Flux density = flux x area
B. Flux density = flux / area
C. Flux density = flux - area
D. None of these
6 The torque per unit twist of coil is called
A. proportionality constant
B. gravitational constant
C. boltzman constant
D. coupling constant
7 Flurescent screen is a screen where visible spot
A. vanishes
B. is made
C. becomes small and large
D. none of these
8 The voltage increases linearly with
A. time
B. velocity
C. acceleration
D. torque
9 NmA-1 is commonly called:
A. Weber
B. Apmere
C. Guass
D. Coulomb
10 Current is measured in
A. volts
B. watt
C. ohm
D. ampere

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