Question

‘Positive Power’ meaning ___________

(a) Power is being delivered to circuit

(b) Power is being extracted from circuit

(c) No power supply

(d) Input and output powers are equal

I had been asked this question during an interview.

This interesting question is from The International System of Units, Voltage and Current, Power and Energy in division Circuit Variables and Elements of Electric Circuits

Answer 1

Correct choice is (a) Power is being delivered to circuit

For explanation: P > 0 means +ve Power

 Being delivered

                        P < 0 means –ve Power

 Being extracted.