A 4 Ω coil and a 2 Ω coil are connected in parallel. What is their combined resistance? A total current of 3A passes through the coils. What current passes through the 2 Ω coil?

4 Ω and 2 Ω coils are connected in parallel. Therefore, the combined resistance, R

1/R = ¼ + ½ = ¾ R = ¾ Ω

Total current,, I = V/R = 3 Ω V/(4/3) = 3

V = 4V

Current through 2 Ω coil = V/2 = 4/2 = 2 A