Question

2
a) What does the deflection of a compass needle show?
b) Why the bulb did not glow in the first case but glow in the second case
c) What value of sourav is shown here?​

Answer 1

Answer:

(a) Circuit is a closed path through which an electric current flows.

(b) Deflection of compass needle shows that the current is flowing in the circuit. It is magnetic effect of current.

(c) The current flowing through the circuit in first case was too low to make the bulb glow but on adding a cell in the second case makes the bulb glow.

(d) Sourav is an intelligent, helpful, analytical and with scientific aptitude.