P = 1500 W and I = 120 V.
A 1500-W heater is designed to be plugged into a 120-V outlet.
(a) What current will flow through the heating coil when the heater is plugged in?
(b) What is R, the resistance of the heater?
(c) How long does it take to raise the temperature of the air in a good-sized living room (3.00m × 5.00m × 8.00m) by 10.0 °C? Note that the specific heat of air is 1006 J/(kg • °C) and the density of air is 1.20 kg/m3.
Frequently Asked Questions
What scientific concept do you need to know in order to solve this problem?
Our tutors have indicated that to solve this problem you will need to apply the Power in Circuits concept. You can view video lessons to learn Power in Circuits. Or if you need more Power in Circuits practice, you can also practice Power in Circuits practice problems.
What professor is this problem relevant for?
Based on our data, we think this problem is relevant for Professor Li's class at UW-SEATTLE.