Question # 1

When a current carrying conductor is placed in magnetic field at right angle to it. The direction of force acting upon it is:

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The same as direction of field

Opposite the direction of field

Makes an angle of 45^owith the current

At right angle to both the field and the current.

1 Pico Farad is equal to:

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10^-9F

10^-12F

10¹²F

10^-6F

Optical fibers work on the principle of:

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Refraction

Reflection

Total internal reflection

Diffraction

Level of noise recommended in eight, hour work day:

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80-90 dB

80-85- dB

85-90 dB

90-95 dB

What is the voltage across a 6Ω resistor when 3 A of current passes through it?

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2 V

9 V

18 V

36 V

If we double the distance between two charges, what will be the change in the force between them?

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Half

Double

One fourth

Four times

The speed of sound was accurately measured in:

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1736

1737

1738

1739

A thermistor is a dependent resistors:

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Heat

temperature

energy

mass

The S.I unit of potential difference is:

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Ampere

Coulomb

Volt

Watt

Coulomb's law is mathematically stated as:

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F = k q1 q2/r3

F = k q2 q2 / r2

F = k q1 q2 / r

F = k q1 q2 / r2

Capacitors are used to store:

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Current

Voltage

Charge

Resistance

The output of a NAND gate is 0 when:

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Both of its inputs are 0

Both of its inputs are 1

Any of its inputs is 0

Any of its inputs is 1

Earth wire is connected to the:

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Power house

Transformer

Ground

Generator

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