# Problem 1-1: Power of Elements

Find the power of each element. Which one is supplying power and which one is absorbing it?

Solution

a)  Passive sign convention, $P = V \times I = -8 W < 0$ supplying power.

b)  Passive sign convention, $P = V \times I = 8 W > 0$ absorbing power.

c)  Passive sign convention, $P = V \times I = 20 W > 0$ absorbing power.

d)  Active sign convention, $P = - V \times I = - 50 W < 0$ supplying power.

## 2 thoughts on “Problem 1-1: Power of Elements”

1. syed tanveer shah says:

I like the description given with each problem

2. nidhi says:

can u plz explain the part-d of it.how`s the negative sign come here? bcoz P=VI=5*10=50 which is delivering power.