Question

For what value of unknown resistance X the potential difference between B and D will be zero in arrangement of adjacent figure -

• A. 4Ω
• B. 3Ω
• C. 2Ω
• D. 6Ω

Answer 1

Answer: (D)

6Ω

Answer 2

$\frac{12}{X + 6} = \frac{1/2}{0.5}$ ⇒ X + 6 = 12 ⇒ X = 6Ω