Question

A coil of Nichrome wire is 25.0 $\mathrm{m}$ long. The wire has a diameter of 0.400 $\mathrm{mm}$ and is at $20.0^{\circ} \mathrm{C}$ . If it carries a current of 0.500 $\mathrm{A}$ , what are (a) the magnitude of the electric field in the wire, and (b) the power delivered to it? (c) What If? If the temperature is increased to $340^{\circ} \mathrm{C}$ and the voltage across the wire remains constant, what is the power delivered?

          A coil of Nichrome wire is 25.0 $\mathrm{m}$ long. The wire has a diameter of 0.400 $\mathrm{mm}$ and is at $20.0^{\circ} \mathrm{C}$ . If it carries a current of 0.500 $\mathrm{A}$ , what are (a) the magnitude of the electric field in the wire, and (b) the power delivered to it? (c) What If? If the temperature is increased to $340^{\circ} \mathrm{C}$ and the voltage across the wire remains constant, what is the power delivered?

Added by Robert W.

Physics for Scientists and Engineers with Modern Physics

Paul Tipler, Gene Mosca 6th Edition

Chapter 27

Instant Answer

Solved by Expert C D

09/08/2021

Step 1

Given: Length of wire, L = 25.0 m Current, I = 0.500 A Using Ohm's Law, V = IR, where V is the potential difference. V = 0.500 A * 1 Ω = 1 V Electric field, E = V / L E = 1 V / 25.0 m = 0.04 V/m Therefore, the magnitude of the electric field in the wire is Show more…

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A coil of Nichrome wire is 25.0 $\mathrm{m}$ long. The wire has a diameter of 0.400 $\mathrm{mm}$ and is at $20.0^{\circ} \mathrm{C}$ . If it carries a current of 0.500 $\mathrm{A}$ , what are (a) the magnitude of the electric field in the wire, and (b) the power delivered to it? (c) What If? If the temperature is increased to $340^{\circ} \mathrm{C}$ and the voltage across the wire remains constant, what is the power delivered?