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प्रश्न
The elements of electrical heating devices are usually made of:
(a) tungsten
(b) bronze
(c) nichrome
(d) argon
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उत्तर
(c) nichrome
Nichrome has a high resistance.
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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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diameter?
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(a) chemical effect of current
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(c) lighting effect of current
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Your teacher has shown you the following activity.
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Write down any three questions that come to your mind about this activity.
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