Question

(b)What are the factors affecting heating effect of electric current?
(c)Name the component of a circuit which help us to start or stop the appliances & safely and easily.

Answer 1

Answer:

b) The heating effect of an electric current depends on three factors:

i) The resistance, R of the conductor. A higher resistance produces more heat.

ii) The time, t for which current flows. The longer the time the larger the amount of heat produced

iii) The amount of current, I. the higher the current the larger the amount of heat generated.

c) A Switch

Answer 2

Answer:

a)

Three factors

1. Resistance

2.current

3. time of current flowing in conductor

b) Switch which helps start or stop appliances.