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6 Oct 2020
A 500-W heating coil designed to operate from 110 V is made of Nichrome wire 0.500 mm in diameter.
(a) Assuming the resistivity of the Nichrome remains constant at its 20.0°C value, find the length of wire used.
(b) What If? Now consider the variation of resistivity with temperature. What power is delivered to the coil of part (a) when it is warmed to 1 200°C?
A 500-W heating coil designed to operate from 110 V is made of Nichrome wire 0.500 mm in diameter.
(a) Assuming the resistivity of the Nichrome remains constant at its 20.0°C value, find the length of wire used.
(b) What If? Now consider the variation of resistivity with temperature. What power is delivered to the coil of part (a) when it is warmed to 1 200°C?
Manoj PandeyLv10
31 Oct 2020
