Question # 1

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

In CRO, the output waveform of time base generator is

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Circular

Square

Sinusoidal

Saw-toothed

An electron moves at 2 x 10² m/sec perpendicular to magnetic field of 2T what is the magnitude of magnetic force:

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1 x 10^-6 N

6.4 x 10^-17 N

3.6 x 10^-24 N

4 x 10⁶ N

Magnetism is related to:

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Stationary charges

Moving charges

Stationary & Movingcharges

Law of motion

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.

Force on a charged particle is zero when projected at angle with magnetic field.

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0 ^o

90^o

180^o

270^o

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

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

When Ohm meter gives full scale deflection it indicates.

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Zero resistance

Infinite resistance

Small resistance

Very High resistance

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

A device used for detection of current is called.

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Inductor

Voltmeter

Capacitor

Galvanometer

The unit of magnetic induction B is

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Coulomb

Ampere

Coulomb/ampere

Weber/m²

Brightness of screen of CRO controlled by

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Grid

Filament

Anode

Cathode

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

If a low resistance is connected parallel to a galvanometer then galvanometer is converted.

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Ammeter

Voltammeter

Ohmmeter

Multimeter

A charged particle enters in a strong magnetic field its K.E.

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Remain constant

Increases

Decreases

Increases then decreases

A charged particle having charge 'q' is moving at right angle to magnetic field. The quantity which varies is.

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Speed

Kinetic energy

Path of motion

angular velocity

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Physics Fsc Part 2 Chapter 3 Online Test MCQs With Answers

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