Electric input power

Solve problems related to electric power:

a) U = 120 V, I = 0.5 A, P =?
b) P = 200 W, U = 230 V, I =?
c) I = 5 A, P = 2200W, U =?

Correct answer:

P1 =  60 W
I2 =  0.8696 A
U3 =  440 V

Step-by-step explanation:

U1=120 V I1=0.5 A  P1=U1 I1=120 0.5=60 W
P2=200 W U2=230 V  I2=P2/U2=200/230=0.8696 A
I3=5 A P3=2200 W  U3=P3/I3=2200/5=440 V

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