From the diagram below; calculate the total current in the circuit?

A. 5.0A
B. 3.7A
C. 4.5A
D. 4.0A

Correct Answer: Option B
Explanation
V = IR from ohms law

I = V/R

Since the resistance are in parallel

1Reff = 1/8 + 1/12 + 1/6

= (2+3+6)/36 = 11/36

Reff = 36/11 = 3.27

I = I1 + I2 + I3

= V/Reff= 12/3.27

= 3.669A

I = 3.7A