Question # 1

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

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perpendicular

may be paralled or pendicular

series

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 force experienced by a single charge carrier moving with velocity 'v' i magnetic field of strength 'B' is given by

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F =q(v/B)

F=q²(v x B)

F=q(v x B)

F= vx B

The vector representation of force experience give the direction of

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magnetic field

current

length of conductor

force

'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

Current is measured in

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volts

watt

ohm

ampere

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 most suitable material for permanent magnet is

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cobalt

iron

steel

alaminium

The SI unit of magnetic flux is.

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weber

Nm^-1A^-1

tesla

gauss

Galvanometer is a device used for the detection of

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voltage

current

temperature

pressure

A galvanometer in which the coil comes to rest quickly after the current passed through it, or the current stopped form flowing through it, is called

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dead beat galvanometer

stable galvanometer

shunt galvanometer

sensitive galvanomter

If the value of galvanometer constant k = C/BAN is made small, the galvanometer can be made

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Sensitive

Accurate

Stable

None of these

The SI unit of magnetic flux is

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NmA^-2

NmA^-1

NAm^-1

Nm²A^-1

F = I(L x B) is a

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vector

scalar

unit vector

none of these

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

Electron gun consist of

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three anodes

heating cathode

three anodes

three anodes , heating cathode, grid

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