Question

Calculate the resistance per unit length of a nichrome wire, which has a radius of 0.436 mm. The resistivity of nichrome is 1.5×10−6 Ω·m.
Answer in units of Ω/m

If a potential difference of 20 V is maintained across a 3.7 m length of the nichrome wire, what is the current in the wire?
Answer in units of A

Feb 25, 2012

3.579 A

Feb 25, 2012

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