Question

Yakub made an 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 Sourav arrived and suggested him to add one more cell in the circuit. The bulb, then started glowing.
What does the deflection of a compass needle shows?

Answer 1

Answer:

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

Explanation:

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Answer 2

Answer: Deflection of compass needle shows that the current is flowing in the circuit.