In which of the following cases the bulb will glow:

(i) Only one terminal of a cell is joined with a metal wire to one terminal of the bulb.

(ii) Both terminals of the bulb are joined with two metal wires to one terminal of the cell.

(iii) One terminal of the cell is joined to one terminal of the bulb and other terminal of the cell to the other terminal of the bulb.

Distinguish between conductors and insulators of electricity. Give two examples of each.

Draw a circuit diagram for a bulb connected to a cell with a switch. Mark arrows in the diagram to indicate the direction of flow of current.

Read the clues across and clues downwards and fill up the blank squares.

Across :

1. The space around a magnet in which the magnetic needle of the magnetic compass gets influenced is called …………… of that magnet.
2. …………… is a sure test for a magnet.
3. In metals, current flows due to the motion of …………… electrons.

Down :

2. …………… are temporary magnets which are made up of soft iron by electrical method.
3. In a …………… circuit, all appliances work together.
4. We use …………… cells in a T.V. remote.