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A potential difference of 5.00 V will be applied to a 47.00 m length of 18-gauge...

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Question

Physics

A potential difference of 5.00 V will be applied to a47.00 m length of 18-gauge tungsten wire (diameter =0.0400 in). Calculate the current.

Calculate the magnitude of the current density.

Calculate the magnitude of the electric field within thewire.

Calculate the rate at which thermal energy will appear in thewire.

Tungsten: 5.28e-8

Answer & Explanation Solved by verified expert
4.2 Ratings (823 Votes)
Part AResistance of a wire is given byR rhoLAL 4700 mA pid24d diameter 00400 in 0001016 m Since 1 inch 00254mUsing ohms lawV IRI VR VArhoL    See Answer
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