Question # 1

Magnetic induction can be measured in units of.

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Tesla

Gauss

Weber/m2

All of the above

The SI unit of magnetic permeability is.

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WbA-1m-1

Wbm-2

WbmA-1

WbAm-1

A device used for detection of current is called.

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Inductor

Voltmeter

Capacitor

Galvanometer

The magnetic field is uniform and stronger

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Outside the solenoid

Inside the solenoid

At the central part of the solenoid

None of these

Lorentz force means the force acting on a particle, which is

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Magnetic force only

Electric force only

Sum of electric and magnetic force

None of these

A dot represents the direction of magnetic field.

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Out of page

Into the page

Tangent to page

Parallels to page

A voltmeter is always connected in

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Parallel

Series

Perpendicular

Straight line

In current carrying long solenoid the magnetic field produced does not depend upon.

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The radius of solenoid

Number of turns per unit length

Current flowing through solenoid

All of the above

The value of e/m is smallest for

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Proton

Electron

Beta particle

Positron

The magnetic field inside solenoid is given:

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μ_∘nI²

μ_∘nI

μ_∘n/1²

μ_∘I/n

Energy stored per uint volume inside a solenoid is called as

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energy density

Electric flux

Work

Volume charge density

Two parallel wires carrying currents in the opposite direction.

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Repel each other

Attract each other

Have no effect upon each other

They cancel out their individual magnetic fields.

To convert a galvanometer into an ammeter, we connect with it a

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Shunt resistance

Low value parallel

Low value by pass resistor

All of above

To convert a galvanometer into a volt meter a high resistance is connected.

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In series

In parallel

In perpendicular

Along tangent

Cathode ray oscilloscope works by deflecting a beams

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Neutrons

Protons

Electrons

Positron

When charge particle enter perpendicular to magnetic field, the path followed by it is:

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A helix

A circle

Straight line

Ellipes

For accurate measurement of current through a circuit, the resistance of ammeter should be

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Very small

Very high

Neither small nor high

None of the above

The SI unit of magnetic induction 'B' Tesla is equal to.

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NA-1m-1

Nam-1

NA-1 m

Na2m-1

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