1 A 120V power line is protected by a 15A fuse What is the m

#1 A 120-V power line is protected by a 15-A fuse. What is the maximum number of \"120V, 100W\" light bulbs that can be operated at full brightness from this line? A. 12 B. 6 C. 3 D. 2 E. 1

Solution

For 120 V, 100 W bulb, current it draws :

I = P/V = 100/120 = 5/6 A

So, number of bulbs required for 15 A fuse = 15/(5/6) = 18