Why coiled shape product more light?
Answers
Explanation:
coiled wire is longer than a straight wire that fits in the same space. Therefore it has higher resistance (R=ρlA) and so produces more heat from the same current flowing through it.
A coiled wire can't cool itself as efficiently as a straight wire because radiation from one part of the wire can impinge on another part of the wire instead of out into space; and because air flowing over one part of the wire might then flow past another part of the wire instead of away from the wire.
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Answer:
coiled wire is longer than a straight wire that fits in the same space. Therefore it has higher resistance (R=ρlA) and so produces more heat from the same current flowing through it.
Explanation:
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