The heating element of a clothes dryer has a resistance of 9 ohm and is connected across a 120 Volt outlet. Find the current in the heating element?
The filament in an incandescent light bulb is made from tungsten. The light bulb is plugged into a 240 Volt outlet and draws a current of 1.4 Amp. If the radius of the tungsten wire is 0.003 millimeter, determine how long must the wire be?