A portion of Nichrome wire of radius 3.95 mm is to be used in winding a heating coil. If the coil must draw a current of 9.70 A when a voltage of 120 V is applied across its ends, find the following. (Take the resistivity of nichrome to be 1.50 10-6 ? · m.)
(a) the required resistance of the coil
(b) the length of wire you must use to wind the coil