Question # 1

When a point charge which is responsible for a force being exerted on another point charge is suddenly moved the second charge experience.

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Nor charge of force

An instantaneous change of force

A sudden change of force of some later time

an increase of its charge because of induction.

Which is the fundamental quantity in electrostatic.

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Electric charge

Electric potential

Electric field

Electric field intensity

Gauss's law a most useful in cases where the charge distributions.

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Are made up of discrete point charges

Are finite in their spatial extent

Give rise to inverse square law fields

Posses a certain amount of symmetry

The Step up transformer

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Increase the input current

Increases the input voltage

Has more turns in the primary coil

Has less time in the secondary coil

In gases, the charge carriers are.

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Atoms

Molecules

Electrons only

Ions and electrons

The value of electric field intensity is.

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Volt

Coulomb

Newton

Newton coulomb

If a di electric is placed between the plates of a capacitor, its capacitance.

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Decreases

Increases

Remains unaffected

Is zero

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

Thermocouple is used for

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Converting atomic energy into heat energy

Measure the radiant energy

Storing the heat energy

Measuring current

Select the one that is not a donar

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P

AS

Sb

In

If a charged body is moved against the electric field it will gain.

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P.E

K.E.

Electrical P.E.

Gravitational energy

The steady current which produces the same heating effect in a resistance in a given time as the alternating current does in the same resistance in the same time is called.

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Induced current

Root mean square value of an alternating current

Mean value of alternating current

Electromotive force

What for is a modulator circuit used.

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To eliminate carrier waves

To superpose the radio frequency signal on the carrier waves

To transmit the signal

To create sound waves

The net charge on a condenser is

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Zero

Q/2

2Q

Infinity

When X_c = X_l, this condition is called.

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Equality

Balanced

Resonance

Equlibrium

In the magnetic circuit concept the quantity analogous to electric current in electric circuit analysis is.

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Magnetic flux density

Permeability

Magnetic field intensity

Magnetic flux

The presence of a magnetic field can be detected by a

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Small mass

Stationary positive charge

Stationary negative charge

Magnetic compass

Charge carriers in thermocouples are.

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Anions

Cations

Electrons

Protons

Why should household appliances be connected in parallel with the voltage source.

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To increase the resistance of the circuit

To decreases the resistance of the circuit

To provide each appliance the same voltage as the power source

To provide each appliance the same current as the power source.

A heat sensitive resistor is called.

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Thermistor

Varibale resistor

Fixed resistor

Zero resistor

If we use two diodes and a centre tapped transformer we will get.

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A transistor

An amplifier

A half wave rectifier

A full wave rectifier

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