Electricity

Cell is a device which

• converts chemical energy into electrical energy

• electrical energy into light energy

• electrical energy into magnetic energy

• None of these

A battery is

• a single cell

• a combination of cells in which cells are joined (+) to (-)

• a combination of cells in which cells are joined (+) to (+)

• None of these

An example of a conductor is

• tap water

• salt solution

• metal wire

• all of these

What is a circuit?

• an outlet or switch
• a path which an electric current flows
• a poor conductor

Which of the following is NOT a conductor?

• Water
• Aluminum
• Wood
• Penny

Why is it unsafe to switch on a bulb with wet hands?

• The switch blows off.

• It can give a shock.

• The bulb gets fused.

• The wires are disconnected.

If we touch a a live wire carrying current, we get a shock. This is because our body is a/an

• conductor of electricity

• insulator of electricity

• source of electricity

• None of these

Why do electricians wear gloves made of rubber?

• It is soft.

• It is waterproof.

• It is an insulator.

• It is inexpensive.

Cell is a device which

• converts chemical energy into electrical energy

• electrical energy into light energy

• electrical energy into magnetic energy

• None of these

A bulb has

• two terminals and one filament

• two terminals and two filaments

• multiple terminals and single filament

• single terminal and single filament