Electric Current and its Effects

The coil of wire contained in an electric heater is known as:

• Component

• Element

• Circuit

• Spring

The amount of heat produced in a wire depends on:

• Material

• Length

• Thickness

• All of these

• None of these

A fuse is used to save energy in electrical circuits.

• True

• False

Is there anything wrong in this circuit diagram?

• Yes, something is wrong.

• No, nothing is wrong.

In the question where a circuit diagram was shown, tell why or why not was circuit was wrong?

A ______ is a safety device which prevents damage to electrical circuits and possible fires

• MCB

• Fuse

• Switch

• Car Key

The effects of current are:

• Heating Effect

• Lighting Effect

• Magnetic Effect

• Charging Effect

Longer line in cell symbol?

• +ve

• -ve

The degree to which a material opposes the passage of current through itself is called_____.

A fuse wire is a wire of-

• High resistivity and low melting point

• High resistivity and high melting point

• Low resistivity and low melting point

• Low resistivity and high melting point