Question

Edison made a circuit as shown in the figure. He observed that the bulb did not glow but on bringing a compass needle near it shows deflection. He was quite confused that if current is flowing through the circuit then why the bulb is not glowing. Meanwhile his friend Testla arrived and suggested him to add one more cell in the circuit. The bulb, then started glowing.

(a) Define a circuit.
(b) Do liquids conduct electricity?
(c) What does the deflection of a compass needle shows?(d) Why the bulb did not glow in the first case but glow in the second case?​

Answer 1

Explanation:

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