Question # 1

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

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parallel

zero

perpendicular

none of them

A field is uniform and much stronger:

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Inside a long solenoid

Outside a long solenoid

At the end of a long solenoid

At the central point of long solenoid

None of these

Tesla is the unit of

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Magnetic induction or flux density

Magnetic flux

Self inductance

None of these

The sources of magnetic field are

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isolated magnetic poles

charges at rest

charges in motion

none of these

The SI unit of magnetic flux is.

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weber

Nm^-1A^-1

tesla

gauss

The current is measured in

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volts

watt

ampere

ohm

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

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magnetic field

electric field

gravitational field

nuclear field

A resistance used in galvanometer to make it voltmeter is called

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shunt resistance

high resistance

zero resistance

none of these

Ammeter is used to measure

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voltage

resistance

voltage and current

current

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

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loop

circle

bar magnet

none of these

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

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electric field

gravitational field

magnetic flax

magnetic field

Flurescent screen is a screen where visible spot

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vanishes

is made

becomes small and large

none of these

In a straight current carrying conductor, the direction of magnetic field can be found by

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right hand rule

left hand rule

head to tall rule

none of these

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

The magnetic field outside the solenoid due to current is

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strong

zero

weak

uniform

The SI unit of magnetic induction is tesla which is equal to

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Newton/ampere-meter or N/A-m

Newton/ampere²-meter or N/A²-m

Newton/ampere²-meter² or N/A²-m²

Newton/ampere²-meter²or N/A²-m²

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ECAT Physics Chapter 14 Electromagnetism Online Test MCQs With Answers

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