Question # 1

The field around a moving charge is called

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magnetic field

conservative field

non-conservative field

none of these

In a moving coil galvanometer, the deflecting couple depends upon

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area of the coil

number of turns of coil

value of magnetic field

all of the above

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

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IT = 10^-4G

IT = 10⁵G

IT = 10³G

IT = 10⁴G

The SI unit of flux density is

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Newton/Amp-meter

Newton-m/Ampere

Newton-m/Amp²

Newton-Amp/meter

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 strength of magnetic field around the current conductor is

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Smaller near the conductor

Greater near the conductor

Greater at the large distance from the conductor

Constant near and away from the conductor

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

NmA^-1is commonly called:

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Weber

Apmere

Guass

Coulomb

None of these

Magnetic flux passing through the an element of are A placed perpendicular to a uniform magnetic field Bis:

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Maximum

Minimum

Zero

Very small

None of these

The current is measured in

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volts

watt

ampere

ohm

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

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avometer

millimeter

voltmeter

none of these

CRO deflects the beam of

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proton

a-particle

electron

neutron

The force experienced by charged particle is maximum, if it moves

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parallel to magnetic field

perpendicular to magnetic field

opposite to the magnetic field

none of these

The force experienced by an electron projected in a magnetic field B with a velocity V is given by

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F=e(V x B)

F= -e(V x B)

F= e(B x V)

Both a and c

The magnetic field in the middle of a solenoid due to current is

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weak

strong and uniform

none-uniform

zero

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

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modification

voltage

current

resistance

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