Question

9. Rank the following from smallest current to largest current.
A. A 1200W microwave connected to 110V outlet.
B. A 1500W water heater connected to 220V outlet.
C. A 100W light bulb connected to 110V outlet.
D. A 2000W oven connected to a 220V outlet.
E. A 40W Light bulb connected to a 12V battery.

Answer 1

P = VI => I = P/V

A. I = 1200/110 = 10.91 A
B. I = 1500/220 = 6.82 A
C. I = 100/110 = 0.91 A
D. I = 2000/220 = 9.09 A
E. I = 40/12 = 3.33 A

Arranging from smallest to largest:
=> C - E - B - D - A