If the 12 Ω resistor draws a current of 1 A as shown in the figure, the value of resistance R is

- A4 Ω
- B6 Ω
- C8 Ω
- D18 Ω
Solution & Step-by-step Explanation
The circuit is

Current in R Ω resistor is
i = 2 – 1 = 1A
Voltage across 12 Ω resistor is,
V = 1 × 12 = 12 V

Current in R Ω resistor is
i = 2 – 1 = 1A
Voltage across 12 Ω resistor is,
V = 1 × 12 = 12 V