Question # 1

Which of the following statemtents is worng.

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Charge is quantized

Charge is conserved

There is not field near an isolated charge at rest

A moving charge produces both electric and magnetic field.

With increase in temperature the electrical conductivity of intrinsic conductors.

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Increases

Descreases

Remain unaffected

First increases then decreases

Inductance divided by resistance and the product of capacitance and resistance both have units of.

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Charge

Time

Force

Current

Faraday's law deals with

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Induced emf

Motional emf

Induced current

Electric current

The magnetic flux linked with a circuit when a unit current flows through it is known as.

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Induced current

Induced emf

Coefficient of self induction of circuit

Eddy current

The maximum field that a dielectric material can with stand whiteout breaking down is called its.

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Di electric strength

Magnetic strength

Capacity

Resistance

The internal resistance of a primary cell depends upon the.

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Current dawn form the cell

Concentration of the solution

distance between cell electrodes

All of the above

What does a dynamo generate

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Electrons

Emf

anion

Cation

Which of the following is an example of induced magnetism.

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A compass needle pointing north

A north pole attracting iron filings

A northpole repelling a north pole

The coil of a motor turning in a magnetic field.

The circuit of full wave rectification consists of

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Only one diode

Two diodes

Three diodes

Four diodes

The material of an electromagnet should have high

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Permeability

susceptibility

Retentivity

Hysteresis loss

In which form energy in an inductance coil is stored.

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Heat energy

Light energy

Magnetic energy

Nuclear energy

Which given material is the best for making connecting wires

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Nichrome

Iron

Gold

Copper

The impedance of the circuit at resonance frequency is

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Minimum

Maximum

Zero

Infinity

Which of the following quantities is analogous to mass in electricty.

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Charge

Potential

Capacitance

Inductance

The immediate cause of alternating currrent in the secondary coil of a transformer is

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A changing electric field

a changing magnetic field

The motion of primary coil

The iron core of the trnasformer

Which one of the following instruments has the maximum resistance.

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Ammeter

Voltmeter

Micro ammeter

Milli ammeter

A generator running in reverse may be called as.

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A.C. Generator

D.C. generator

Motor

Commutator

Condenser is used

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To produce charge

To change the direction of current

To collect the charge

As a good conductor of electricity

In electronegative waves the electric and magnetic fields are.

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Parallel to each other

Perpendicular to each other

antiparallel to each other

At an angle of 45 ^o to each other

Which of the following has teh maximum permeability.

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Paramagnetic substances

Ferromagnetic substances

Diamagnetic substances

Iron oxide

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