A certain brand of hot dog cooker applies a potential difference (120 V) to opposite ends of the hot dog and cooks by means of the joule heat produced. If 60 kJ is needed to cook each hot dog, what current is needed to cook four hot dogs simultaneously in 3.0 min?
A) 11 A
B) 2.8 A
C) 8.3 A
D) 2.1 A
E) 3.6 A

Question

Quizplus · Accepted Answer

The power needed to cook four hot dogs simultaneously in 3.0 min is:$$P = \frac{4 	imes 60 	ext{ kJ}}{3.0 	ext{ min}} = 800 	ext{ W}$$The current needed is:$$I = \frac{P}{V} = \frac{800 	ext{ W}}{120 	ext{ V}} = 6.67 	ext{ A}$$The closest answer choice is A) 11 A.

A Certain Brand of Hot Dog Cooker Applies a Potential