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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 one.
(a) Since the resistivity of a conductor is directly proportional to its length a long piece of nichrome wire will have more resistance as compared to the short piece of nichrome.
(b)Since the resistivity of a conductor is in an inverse relation with the cross-section area of the conductor the thin piece of nichrome wire will have more resistance.
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