Write in brief, the working of an electric torch.
2. A student, while performing an experiment in the science laboratory, connected
an electric bulb to an electric cell through an electric switch. He noticed that the
bulb did not glow when the electric switch was set in its ON position. Mention
any two reasons for this observation.
Separate out the devices, listed below, into categories that usually work with
(i) either batteries or mains (ii) batteries only (iii) mains only.
kettle, iron press, calculator, toaster, mobile phone, washing machine, radio,
transistor, computer, microwave oven.
Answer me all the answers very short (briefly)
Answers
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Answer:
2. Batteries only.
Explanation:
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