Question

Complete the crossword using the given clues.

Across
1. Name of the circuit in which electric current is not passing.
2. This is used as a source of light when there is no electricity.
Down
3. Electric current flows through this.
4. A device used to make an electric circuit on and off.
5. The gas is filled in a bulb.
6. The device is used to protect a circuit.

Accepted Answer

(1) An electrical circuit in which the continuity is broken is known as an open circuit. The current does not flow through an open circuit.

(2) The cell is a part of the circuit which converts chemical energy into electricity.

(3) Electric current flows through the copper cap of an electric cell. The small metal cap at one end of a dry cell acts as the positive terminal and a metal disc at the other end acts as the negative terminal. A container made up of zinc can is a part of the dry cell. Inside the container, a carbon rod surrounded by a mixture of powdered carbon and manganese dioxide is present.

(4) An electric switch is a device that is used to open or close an electric circuit.

(5) An inert gas such as argon or neon is filled in the bulb.

(6) A fuse is used as a safety device in electrical circuits in our homes. Its essential component is a metal wire or strip that melts when too much current flows through it, thereby interrupting the current.

Important Questions on Electricity and Circuits

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