Q.2(a) A & B are two devices. Both these devices have two terminals each. If the two terminals of device A are connected directly by a wire, nothing happens but when the two terminals of device B are connected by a wire directly, it gets damaged quickly. When the two terminals of device B are connected to the two terminals of device A, by copper wires, then part C of device A gets heated & glows to provide light.(i) What could be device A & device B ?(ii) Name the part C of device A. (iii) In which device, A or B, the two terminals are marked (+) & (-) ?(b) Name the source of electricity in a torch.
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cell electricity in a torch was there
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