Calculate the power absorbed by element A in the figure.

#### Solution:

### We know that power, p=vi where v is voltage and i is current.

### From the question, we know that power is **absorbed** by element A. Thus, using the sign convention given to us in the diagram:

### p=(15v)(-3A)

### p=-45w

###### This question can be found in Basic Engineering Circuit Analysis, 10th edition, chapter 1, question 1.21.