Electricity and Circiuts

When did Benjamin Franklin discover electricity?

• 1783

• 1756

• 1752

• 1702

Which of these is/are a conductor of electricity?

• Iron

• Gold

• Glass

• Plastic

The positive terminal of the dry cell is ________.

________ opens or closes the circuit.

• Key

• Switch

• Pin

• On/Off

Which of these are insulators?

• copper

• rubber

• Plastic

• Glass

Draw an electric circuit using wires, cell and LED.

We should not touch switches with wet hands.

• TRUE

• FALSE

If we notice spark in a switch we should immediately turn it off with a ________.

Our body is a good ____________ of electricity.

• Conductor

• Insulator

A ______ sign is made on transformers to prevent shocks.