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A piece of Nichrome wire has a radius of 5.0x 104 m. It is used in a laboratory to make a
heater that dissipates 4.00x102W of power when connected to a voltage source of 150
V. Ignoring the effect of temperature on resistance, estimate the necessary length of wire.
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Units

Expert Solution

Step 1

Given data :

Radius of wire r = 5 × 10^-4 m

Power P = 4 × 10² W

Voltage V = 150V

By using equation R = (rho × l )/ A , we can easily calculate length of wire.

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