You are provided with a torch bulb, a cell and two plastic coated metal wires. Draw a diagram to show a complete circuit to light the bulb.

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.

Select conductors and insulators from the following:

Glass, silver, copper, wood, paper, pure water, impure water, aluminium, iron, leather, plastic, steel, human body and ebonite

The following diagram shows four circuits A, B, C and D. Each circuit has a cell and a torch bulb. Name the circuits in which the bulb will glow? Give reason to your answer.