(a) Calculate the resistance per unit length of a 44 gauge nichrome wire of radius 0.642 mm. (b) If a potential difference of 11.5 V is maintained across a 1.00 m length of wire, what is the current in the wire? (c) The wire is melted down and recast with triple its original length. Find the new resistance RN as a multiple of the old resistance RO.
(a) Calculate the resistance per unit length of a 44 gauge nichrome wire of radius 0.642 mm. (b) If a potential difference of 11.5 V is maintained across a 1.00 m length of wire, what is the current in the wire? (c) The wire is melted down and recast with triple its original length. Find the new resistance RN as a multiple of the old resistance RO.
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(a) Calculate the resistance per unit length of a 44 gauge nichrome wire of radius 0.642 mm.
(b) If a potential difference of 11.5 V is maintained across a 1.00 m length of wire, what is the current in the wire?
(c) The wire is melted down and recast with triple its original length. Find the new resistance RN as a multiple of the old resistance RO.
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