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Factors That Influence Resistance

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We know that H=V/R but why a wire having more resistance produces more heat ? Like a nicrome wire

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Why do we use a short wire in fuse and not long wire if we know that more is the length more is the heat produced

Q. Which has more resistance:

(a) a long piece of nichrome wire or a short one?
(b) a thick piece of nichrome wire or a thin piece?

Q. In a series circuits one with aluminum wire and other with nichrome wire of same length and thickness.which will produce more heat for the same 6V in both circuits?

Thicker wire will have more resistance than a thinner wire.

A thinner brass wire will always have more resistance than a thicker bronze wire.

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Factors That Influence Resistance

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