You have a parallel circuit in a house that operates on 120 V with several outlets for plugging in appliances and it has a 20 A fuse in the circuit.What is the maximum number of 600-W appliances that can be plugged into the outlets without "blowing" the fuse? Assume that if the current flow exceeds the rating of the fuse,it will blow.
A)2
B)4
C)5
D)7

Question

Quizplus · Accepted Answer

The total power that can be used without blowing the fuse is 120 V * 20 A = 2400 W. Each 600-W appliance uses 600 W, so 2400 W / 600 W per appliance = 4 appliances. However, since the question asks for the maximum number without exceeding the fuse rating, you can safely plug in 4 appliances, but not 5, as 5 would exceed the 2400 W limit.

You Have a Parallel Circuit in a House That Operates