The heater element of a particular 120-V toaster is a 8.9-m length of nichrome wire, whose diameter is 0.86 mm. The resistivity of nichrome at the operating temperature of the toaster is 1.3 × 10-6 ? ? m
If the toaster is operated at a voltage of 120 V, how much power does it draw?
A) 720 W
B) 700 W
C) 750 W
D) 770 W
E) 800 W
Answer: A
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