Question # 1

The SI unit of magnetic induction is

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Gauses

Tesla

Weber

Weber²

The magnetic force exerted on an electron moving with velocity 'v' at right angle to the magnetic field is given by

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F=eVB

F=e²V/B

F=e/VB

F=B²/ev

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

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minimum force

maximum force

zero

moderate force

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

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avometer

millimeter

voltmeter

none of these

In the region surrounding a current carrying wire:

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A magnetic field is setup

The lines of force are elliptical

Direction of lines of forces depends upon direction of current

Both (A) and (C)

All of these

the current is pass through the straight wire. The magnetic field established around it has its lines of force:

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Circular and endless

Oval in shape and endless

Straight

Parabolic

All are true

Lorentz force is defined as

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q(E + V x B)

q(E x B + V)

q(E x V + B)

q(E x B)

Ammeter is used to measure

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voltage

resistance

voltage and current

current

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:

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-y direction

+y direction

+z direction

-z direction

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

A galvanometer is an instrument used to

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measure voltage across a circuit

detect current in a circuit

measure current flowing through a circuit

none of these

NmA^-1is commonly called:

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Weber

Apmere

Guass

Coulomb

None of these

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

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ampere

volts

milliampere

ohm

Weber is a unit of

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magnetic flux

magnetic filed intensity

magnetic induction

magnetic flux density

A voltmeter is used to measure the

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potential difference

current

temperature

resistance

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

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0

1

0.5

-1

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