Refer to Figure 21 7 and the discussion of lights dimming when a heavy appliance comes on (a) Given the voltage source is 120 V, the wire resistance is 0 400 , and the bulb is nominally 75 0 W, what power will the bulb dissipate if a total of 15 0 A passes through the wires when the motor comes on ...

Refer to Figure 21.7 and the discussion of lights dimming when a heavy appliance comes on. (a)

Question:

Refer to Figure 21.7 and the discussion of lights dimming when a heavy appliance comes on.

(a) Given the voltage source is 120 V, the wire resistance is 0.400 Ω, and the bulb is nominally 75.0 W, what power will the bulb dissipate if a total of 15.0 A passes through the wires when the motor comes on? Assume negligible change in bulb resistance.

(b) What power is consumed by the motor? Large IR drop in wires R = wire resistance www Motor - Refrigerator Low P R WWW 000) Bulb dims Low R draws