NEET Questions Solved

PMT - 2004

For what value of unknown resistance X, the potential difference between B and D will be zero in the circuit shown in the figure

(1) 4 Ω

(2) 6 Ω

(3) 2 Ω

(4) 5 Ω

(2) For balanced Wheatstone bridge $\frac{P}{Q}=\frac{R}{S}$

$\frac{12}{\left(1/2\right)}=\frac{x+6}{\left(1/2\right)}$$x=6\Omega$

Difficulty Level:

• 5%
• 73%
• 20%
• 4%
Crack NEET with Online Course - Free Trial (Offer Valid Till September 23, 2019)