In the circuit shown in Fig, the current in 4 Ω resistance

In the circuit shown in Fig, the current in 4 Ω resistance is 1.2 A. What is the potential difference between B and C.

The potential difference across 4Ω resistance is given by V = 4 × i₁ = 4 × 1.2 = 4.8 volt
So, the potential across 8Ω resistance is also 4.8 volt.

Current i₂ =	V	=	4.8	=0.6 amp
	8		8

Current in 2Ω resistance i = i₁ + i₂
∴ i = 1.2 + 0.6 = 1.8 amp
Potential difference across 2Ω resistance
V_BC = 1.8 × 2 = 3.6volts