The diagram shows a simplified household circuit. Resistor R1 = 240.0 Ω represents a light bulb; resistor R2 = 12.0Ω represents a hair dryer. The resistors r = 0.50Ω (each) represent the resistance of the wiring in the walls. Assume that the generator supplies a constant 120.0 V rms.
(a) If the light bulb is on and the hair dryer is off, find the rms voltage across the light bulb and the power dissipated by the light bulb.
(b) If both the light bulb and the hair dryer are on, find the rms voltage across the light bulb, the power dissipated by the light bulb, and the rms voltage between point A and ground.
(c) Explain why lights sometimes dim when an appliance is turned on.
(d) Explain why the neutral and ground wires in a junction box are not at the same potential even though they are both grounded.

Transcribed Image Text:

Hot buibHair dyer R, Light R dryer