Air is not filled in electric bulbs because on lighting, the filament of the bulb becomes hot and this heat will result in burning in presence of air.
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Why is air not filled in electric bulbs?
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Paheli took a wire of length 10 cm. Boojho took a wire of 5 cm of the same material and thickness. Both of them connected the wires as shown in the circuit given in figure. The current flowing in both the circuits is the same. a. Will the heat produced in both the cases be equal? Explain. b. Will the heat produced be the same if the wires taken by them are of equal lengths but of different thickness? Explain.
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