Question

Total power consumed in the circuit below is_______W.

• A. 80
• B. 20
• C. 0
• D. 150

Answer 1

The correct option is A 80




Applying kVL
$-V+4\times 4+4=0$
$V=20Volts$
Power delivered by current source
$=20\times 4=80W$
or, Power consumed $=I_1^{2}R+I_1^{2}R+VI$
$=4^2\times 4+1^2\times 4+3\times 4$
$=80W$
As resistance always consumes power and current is entering into positive terminal so voltage source is also consuming power.