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Take an electric cell, a bulb, a switch and connecting wires. Make an electric circuit as shown in this figure above. This activity has to be done using only one cell. Move the electric switch
to the ON position and let the bulb glow
for a minute or so, Touch the bulb. What do you feel?
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Solution
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Correct option is A. The bulb is slightly warm to touch
After the switch has been turned on, electric current passes through the circuit and into the bulb which increases it's temperature. But since the current is being passed for only a minute, the temperature increase is very slight. Hence option $$A$$ is correct.
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