Question

if I connect a piece of aluminium foil in an electric circuit having an electric cell and a bulb. Will the bulb glow? give reason​

Answer 1

Answer:

The bulb will be not glow

Explanation:

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Answer 2

Answer:

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• No, the bulb will not glow in this circuit because the switch is open and the circuit is broken. Current flows only in a closed circuit.

Example:-

An electric bulb is connected to a cell through a switch as shown in fig 12.7. When the switch is brought in ‘ON’ position, the bulb does not glow. What could be the possible reason/s for it? Mention any two of them.

Solution:-

When the switch is brought in ‘ON’ position, the bulb does not glow. There could be following reasons for it:

• (i) Loose connections.
• (ii) Connecting wires are broken.
• (iii) The cell is a used one.
• (iv) The bulb is fused