Question

5.
Complete the drawing shown in Fig 12.14 to
indicate where the free ends of the two wires
should be joined to make the bulb glow.
What is the purpose of using an electric switch?
Name some electrical gadgets that have switches
built into them.
Would the bulb glow after completing the circuit
shown in Fig. 12.14 if instead of safety pin we
use an eraser?
6.
7. Would the bulb glow in the circuit shown in Fig. 12.157​

Answer 1

Combustion is a chemical process in which a substance reacts rapidly with oxygen and gives off heat. The original substance is called the fuel, and the source of oxygen is called the oxidizer. ... During combustion, new chemical substances are created from the fuel and the oxidizer.