The total power dissipated in watts in the circuit shown here is

Options

A. 16
B. 40
C. 54
D. 4

Answer

C

Explanation

`P = V^(2)/R_(eq) , R_(eq) = 4 + (3 xx 6)/9 = 6 Omega`
`=18^(2)/6 = (18 xx 18)/6 = 54` watts.