Question # 1

Electromotive force is closely related to.

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Inductance

Magnetic flux density

Potential difference

Electric field intensity

A device used to detect and measure charge is.

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A voltmeter

An ammeter

An electroscope

An amplifier

In L-C parallel circuit the capacitor draws a

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Lagging current

Leading current

Lagging voltage

Leading voltage

In an induction coil, the secondary emf is.

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Zero at the break of the circuit

Zero during make of the circuit

Very high during make of the circuit.

Very high during break of the circuit

The basic circuit element is a D.C. circuit is

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An inductor

A resistor

A capacitor

A battery

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

An instrument used to find the direction of the earths magnetic field is known as.

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Magnetometer

Electroscope

Cyclotron

Particle accelerator

Mutual inductance has a practical role in the performance of the

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Radiochoke

Transformer

Generator

Trnasistor

The core of a transfer is made of iron because

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Iron is a good electric material

Iron is cheaper than copper

Iron is easily magnetized and demagnetized

Iron makes a good permanent magnet

A junction between P-Type and n-type materials is called.

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Ampilifier

Transistor

Rectifier

Diode

Which are the following describe the study of static magnetic fields.

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Electrodynamics

Megnetostatic

Electrostatic

Paraamagnetism

A forward based p-n semiconductor diode is called.

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Photodiode

Photovoltaic cell

Amplifier

Ligh emitted diode

Artificial polymers are made by a chemical reaction known as.

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Crystallization

Electroplating

Polymerization

Polarization

Which is not the strongest and the most familiar type of magnetism.

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Diamagnetism

Para magnetism

Ferromagnetism

All of these

Inductance are measured in

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Coulombs

Volts

Henrys

Farads

Which method of charging is involved in making lightning.

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Induction

Friction

Contact

Convection

On which of the following parameters capacitance does not depend upon.

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Area of the plates

Medium between the plates

Distance between the plates

Nature of material for plates

A generator running in reverse may be called as.

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A.C. Generator

D.C. generator

Motor

Commutator

The work done is moving a very small charge in an electric field from one point to another is

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Independent of the path

Equal to the potential difference between the two points.

Measured in V m-1

Measured in J c-1

In gases, the charge carriers are.

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Atoms

Molecules

Electrons only

Ions and electrons

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.

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