Power= current x potential difference
To find total resistors in ohms, in parallel circuit, do 1/given ohms for all resistors first; then, add them together:
1/3 ohms + 1/2 ohms = 5/6 ohms
V= IR
xR
VR = I
I=VR
= 9 x 5/6
= 7.5 amps
P = I x V
= 7.5 x 9
= 67.5
Hope this helps!
