Question # 1

The sum of the positive and negative peak values is known as.

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Peak value

Average value

Instantaneous value

Peak to peak value

Electric field lines

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Start from a negative charge and terminal ate on a positive charge

Never cross each other

Always cross each other

Leaving a positive charge are not proportional to the maginitud of charge

The resistance offered by one cubic meter of a substance is known as.

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Reactance

Conductance

Conductivity

Resistivity

The force exerted by two charged bodies on another obeys Coulomb's law provided that

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Both bodies are in the same medium

the charges are not too great

On body does not lie inside the other

The linear dimensions of the body are very much less than the distance between the bodies.

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

The magnetic force is simply a

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Reflecting force

Deflecting force

Restoring force

Gravitational force

What is term for tendency of a system to oscillate with larger amplitude at some frequencies than at others.

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Resonance

Impedance

Inductance

Capacitance

On which principle the induction coil works on.

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Self induction

Ampere's rule

Mutual induction

Gauss's law

Magnetic lines of force due to earth's horizontal magnetic field are.

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Curved lines

Elliptical

concentric circles

Parallel and straight

The resistance of 10 micro F capacitance, when connected to A D.C. circuit is.

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Zero

Unity

-1

Infinity

At room temperature the p.d. between the two sides of depletion region for germanium is of the order of.

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0.3 V

0.5 V

0.7 V

0.9 V

The permeability of a diamagnetic material is

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Greater than unity

Less than unity

Equal to unity

Zero

The force on a point charge due to electromagnetic fields is called.

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Lorenz force

Gauss's force

Newton's force

Ampere's force

What is the range of values of power factor.

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0 to -1

0 to +1

0 to 2

2 to 3

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

The relation between the voltage and current that flows in a resistor is.

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V = 1/R

R = vi

V = I2 R

I = V /R

The impedance of the circuit at resonance frequency is

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Minimum

Maximum

Zero

Infinity

Which of the following quantity is defined in terms of the rate of change of electric displacement field.

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Conventional current

Electronic current

Displacement current

Pulsating current

The capacity of a spherical conductor is numerically equal to its.

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Surface area

Diameter

Radius

Volume

When the number of turns in the solenoid is doubled without any change in teh length of the solenoid its self inductance will be.

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Halved

Doubled

4 times

8 times

What type of current is produced by batteries.

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Direct current

Alternating current

Pulsating current

Convection current

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