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प्रश्न
Which metal is used to make the filament of an electric bulb?
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उत्तर
Tungsten metal is used to make the filament of an electric bulb.
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संबंधित प्रश्न
An electric iron of resistance 20 Ω takes a current of 5 A. Calculate the heat developed in 30 s.
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(c) four time
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| 2. | Electroplating | b. |
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She wrote: Three-pin connections reduce heating of connecting wires.
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