Calculate the current in the 3Ω resistor shown in
Calculate the current in the 3Ω resistor shown in
the diagram above.
A.
3.0A
B.
4.0A
C.
4.3A
D.
12.0A
E.
39.0A
Correct answer is B
Total Resistance R = 1/R = 1/R1 + 1/R2 + 1/R3
R = 12/13Ω
V = IR = (12/13) x 13 = 12v
1 across 3Ω = V/R = 12/3 = 4A