ELECTRIC CURRENT AND ITS EFFECTS

Front

What factors affect the amount of heat produced in a wire?

Back

The amount of heat produced in a wire depends on the material, length, and thickness of the wire.

Front

What are electric fuses made from?

Back

Electric fuses are made from special materials that melt quickly and break when a large electric current passes through them.

Front

What condition must a circuit be in for current to flow?

Back

Current flows through the circuit when the circuit is in a closed condition.

Front

How long does the magnetic field around a current-carrying coil last?

Back

The magnetic field lasts as long as the current flows through it.

Front

What mark is necessary on electric appliances for safety?

Back

The ISI mark is necessary on electric appliances.

Front

Define electric current.

Back

Electric current is the flow of electric charge, typically measured in amperes (A).

Front

What is the unit of electric current?

Back

The unit of electric current is the ampere (A).

Front

What is a closed circuit?

Back

A closed circuit is a complete electrical loop that allows current to flow.

Front

What is an open circuit?

Back

An open circuit is a broken electrical loop that prevents current from flowing.

Front

What is the role of a fuse in an electrical circuit?

Back

A fuse protects the circuit by melting and breaking the circuit when excessive current flows.