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 voltmeter is used to measure the

Question # 2

Resistance is measured in

Question # 3

The SI unit of magnetic permeability is

Question # 4

'K' is the proportionality constant of force experienced by conductor. What is the value of 'K' in SI units?

Question # 5

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 # 6

Current is measured in

Question # 7

The SI unit of magnetic flux is

Question # 8

Magnetic flux and flux density are related by

Question # 9

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

Question # 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:

Question # 11

The magnetic field inside a solenoid can be increased by:

Question # 12

A galvanometer is an instrument used to

Question # 13

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

Question # 14

Amperean path is a:

Question # 15

Galvanometer is a device used for the detection of

Question # 16

How many number of anodes used in electron gun

Question # 17

Which is modified form of galvanometer

Question # 18

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

Question # 19

When some compass needles are placed on a card board along a circle with the center at the wire, they will

Question # 20

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

Question # 21

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

Question # 22

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

Question # 23

Charge to mass ratio (e/m) of an electron is given by the relation

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

F = I(L x B) is a

Question # 26

The most suitable material for permanent magnet is

Question # 27

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

Question # 28

Method "lamp and scale arrangement" used to measure the

Question # 29

Magnetic induction is also called as:

Question # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The force acting on a charge moving in a magnetic field
A. is perpendicular to the both magnetic field and direction of motion
B. is proportional to the magnetic of charges
C. vanishes when the motion is directly opposite to the direction of field
D. all of the above
2 A long wire wound tightly on a cylindrical core is called:
A. Potentiometer
B. Solenoid
C. Toroid
D. Wheat and stone bridge
3 The SI unit of flux density is
A. Newton/Amp-meter
B. Newton-m/Ampere
C. Newton-m/Amp2
D. Newton-Amp/meter
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 strength of magnetic field around the current conductor is
A. Smaller near the conductor
B. Greater near the conductor
C. Greater at the large distance from the conductor
D. Constant near and away from the conductor
6 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
7 NmA-1 is commonly called:
A. Weber
B. Apmere
C. Guass
D. Coulomb
8 The SI unit of magnetic permeability is
A. WB A-1m-1
B. WB mA-1
C. WB Am-1
D. None of these
9 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
10 A beam of electrons is provided by an
A. electron gun
B. Suppray
C. Injection
D. None of these

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