two resistor 6 ohm and 8 ohm are connected in parallael across 36v power supply
R1 = 6 ohms.
R2 = 8 ohms.
Re=R1*R2/(R1+R2) = 6*8/(6+8)=3.429 ohms
= Equivalent resistor.
I1 = E/R1 = 36/6 = 6 Amps.
I2 = E/R2 = 36/8 = 4.5 Amps.
I = I1+I2 = 6 + 4.5 = 10.5 Amps.
P1 = E^2/R1 = 36^2/6 = 216 Watts.
P2 = E^2/8 = 36^2/8 = 162 Watts.
P = P1+P2 = 216 + 162 = 378 Watts.
V1 = V2 = 36 Volts.