Question # 1

Which one of the following resistance is used to convert a Galvanometer into an ammeter.

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High resistance

Low resistance in series with galvanometer

Shunt

High resistance in series with galvanometer

In order to measure potential difference voltmeter is always connected in.

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Series

Parallel

Both a and b

Neither in series nor in parallel

The magnetic field inside solenoid is given:

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μ_∘nI²

μ_∘nI

μ_∘n/1²

μ_∘I/n

For a current carrying solenoid the term 'n' has unit as.

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No unit

m^-1

m^-2

m-3

A battery is used in

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ohmmeter

Ammeter

Galvanometer

Voltemeter

If the length and number of turns of a solenoid are doubled strength of magnetic field with.

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Be doubled

Become half

Not change

Be four time

A Current flowing towards the reader is denoted by.

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Cross

a bracket

A dot

Positive sign

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

If the length of solenoid is doubled but N same, B inside the solenoid becomes.

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Half

Doubled

One fourth

Four times

The unit of Magnetic flux is called.

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weber

weber/m²

NM^-1A^-1

None of above

A dot represents the direction of magnetic field.

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Out of page

Into the page

Tangent to page

Parallels to page

Magnetism is related to:

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Stationary charges

Moving charges

Stationary & Movingcharges

Law of motion

μ_∘(Ampere's constant) has value.

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4πx10^-7 WbA^-1m^-1

4πx10^-17 Wbm²

4πx10⁷ WbA^-1m^-1

4πx10-27 Wb/m²

Brightness of screen of CRO controlled by

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Grid

Filament

Anode

Cathode

Which one has the least resistance.

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Galvanometer

Ammeter

Ohm meter

Volta meter

Magnetic lines of force are.

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Imaginary

Real

Perpendicular

In phase with electric lines of force

The e/m of a neutron is

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Less than electron

The same as electron

Zero

Greater than election

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