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ECAT Physics Chapter 14 Electromagnetism Online Test MCQs With Answers

Question # 1

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

Choose an answer

magnetic field

electric field

gravitational field

nuclear field

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Question # 2

Magnetic lines of force:

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Cannot intersect at all

Intersect at infinity

Intersect within magnet

Intersect at Neutral Point

None of these

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Question # 3

The force acting on a charge moving in a magnetic field

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is perpendicular to the both magnetic field and direction of motion

is proportional to the magnetic of charges

vanishes when the motion is directly opposite to the direction of field

all of the above

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Question # 4

41 The force experience, when proton projected in a magnetic field with velocity 'v' is

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+e(v x B)

-C(V x B)

+e²(v x B)

-e(v²x B)

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Question # 5

The SI unit of flux density is.

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Tesla

Weber

Gaun

Weber/meter

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Question # 6

The current sensitivity of the galvanometer is

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C/BAN

BAN/C

CAN/B

CBN/A

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Question # 7

Current is measured in

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volts

watt

ohm

ampere

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Question # 8

A current carrying conductor is placed at right angle to the magnetic field. The magnetic force experienced by the conductor is

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minimum

maximum

zero

none of these

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Question # 9

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

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constant

small

large

none of these

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Question # 10

A voltmeter is used to measure the

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potential difference

current

temperature

resistance

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Question # 11

The direction of lines of force depends upon the direction of

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voltage

current

charges

none of these

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Question # 12

Ammeter is used to measure

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voltage

resistance

voltage and current

current

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