Nichrome wire of cross-sectional radius 0.764 mm is to be used in winding a heat

Question

Nichrome wire of cross-sectional radius 0.764 mm is to be used in winding a heating coil. If the coil must carry a current of 8.00 A when a voltage of 2.40 times 102 V is applied across its ends, find the following. the required resistance of the coil the length of wire you must use to wind the coil A wire 3.00 m long and 0.450 mm2 in cross-sectional area has a resistance of 38 Ohm at 20 degree C. If its resistance increases to 38.4 Ohm at 26.0 degree C, what is the temperature coefficient of resistivity? degree C-1

Explanation / Answer

edit: use ohm's law to find the resistance, R = 240/8
R = ?L/A
240/8 = (150e-8)L / (?*0.000764

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