Question # 1

What is the degree of magnetization of a material.

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Susceptibility

Ablitity

Retentivity

Capacity

A system of the equal and opposite point charges separated by a small distance is called.

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A capacitor

A dipole

An iinductor

A di electric

Charge carriers in thermocouples are.

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Anions

Cations

Electrons

Protons

A diode cn be used as

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Amplifier

Rectifier

Oscillator

Transistor

High frequency radio wave is called

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Fluctuate wave

Carrier wave

Matre wave

Energetic wave

Which one fo the following is based on the diffraction and repulsion of electric charge.

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Capacitor motor

Transformer

Induction motor

synchronous motor

The SI unit of magnetic flux is

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gauss

Maxwell

Oersted

Water

The electric bulb does not obey Ohm's law because.

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Current changes

Resistance changes

Heat is produced

All of these

Which onw of the following is deflected by an electric field.

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Alpha particles

Gama rays

Neutrons

x rays

Such substance which undergo plastic deformation until they break are known as.

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Diatomic substances

Monoatomic substances

Ductile substances

Brittle substances

If a person winds a coil of wire around a steel rod and then passes an electric current through the wire then the

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Steel rod becomes an electromagnet

Steel rod becomes hot

Wire becomes magnetized

wire becomes demagnetized

Lagging of magnetic flux density behind magnetic field is known as.

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Permeability

Susceptibility

Hysteresis

Uncertainty

The charge per unit volt which is a constant property of the system is known as the

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Dielectric constant

Permitivity

Capactance

Inductance

The field inside a hollow spherical conductor is.

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Constantin zero

Constant but not necessarily zero

A function of charge on sphere

a function of distance from the centre

Which quantity is not affected by a magnetic field.

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Moving charge

Stationary charge

Current flowing in a conductor

Charge in magnetic flux

If the transformer turns ratio is 2 and the impedance eof primary coil is 250 Ohms then the impedance secondary coil will be.

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125 Ohms

250 Ohms

500 Ohms

1000 Ohms

Equipotential surfaces in an electric field are always.

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Spherical

Closed surfaces

Tangent to electric lines of force

Perpendicular to electric lines of force

A generator running in reverse may be called as.

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A.C. Generator

D.C. generator

Motor

Commutator

The separation between the plates of a parallel plate capacitor with original capacitance C is doubled its present capacitance will be.

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1/4 C

1/2 C

2C

4 C

What happens to the intensity or the brightness of the lamps connected in series as more and more lamps are added.

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Increases

Decreases

Remains the same

Cannot be predicted

In L-C parallel circuit the capacitor draws a

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Lagging current

Leading current

Lagging voltage

Leading voltage

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PPSC Physics Chapter 6 Electricity and Magnetism MCQs With Answers

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