Question # 1

The ampere is a unit of:

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Energy

Potential differrence

Electric potential

Electric current

Simplest electrical circuits use:

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One wire

Two wires

Four wires

Five wires

Safe limit of radiations exposure in one year.

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4 rem

5 rem

3 rem

6 rem

Which we double the voltage in a simple electric circuit. We double the

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Current

Power

Resistance

both a and b

One joule per coulomb is called:

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Volt

Farad

Ampere

Tesla

The magnetic field of a solenoid resembles as:

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Iron wire

U-shape magnet

Bar magnet

Point charge.

The speed of sound in iron at 25 ^oC is ms^-1

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5950

5900

6950

6940

If current is flowing from bottom end to the top end in a wire, according to right hand rule the direction of line of forces would be:

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Anti-clock wise

Clock wise

Left and Right

Along the conductor.

If focal length of a lens is 1m, then its power will be:

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1 D

0.5 D

1.5 D

1 D

Which of the following is a method of energy transfer:

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Conduction

Radiation

Wave motion

All of these

parallel plate consists of 2 metal plates separated by:

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conductor

insulator

wooden plate

plastic foam

Which is not a hardware device?

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CPU

Windows

Keyboard

Mouse

Specific resistance of silver is:

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1.7x10^-8 Ω.m

2.63x10^-8 Ω.m

2.75x10^-8 Ω.m

7.0x10^-8 Ω.m

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