Figure shows a balanced Wheatstone net. Now, it is disturbed by changing P to 11 Ω. Which of the following steps will not bring the bridge to balance again?

Question

Figure shows a balanced Wheatstone net. Now, it is disturbed by changing P to 11 Ω. Which of the following steps will not bring the bridge to balance again? (A) increasing R by 2 Ω (B) increasing S by 20 Ω (C) increasing Q by 10 Ω (D) making product R Q=2200(Ω)2

Tardigrade Admin · Accepted Answer

P / Q=R / S. If P is increased, then either R or Q should be increased or S should be decreased.

Q. Figure shows a balanced Wheatstone net. Now, it is disturbed by changing $P$ to $11 Ω$ . Which of the following steps will not bring the bridge to balance again?

increasing $R$ by $2 Ω$

increasing $S$ by $20 Ω$

increasing $Q$ by $10 Ω$

making product $RQ = 2200 (Ω)^{2}$

$P / Q = R / S$ . If $P$ is increased, then either $R$ or $Q$ should be increased or $S$ should be decreased.

Q. Figure shows a balanced Wheatstone net. Now, it is disturbed by changing P to 11Ω. Which of the following steps will not bring the bridge to balance again?

increasing R by 2Ω

increasing S by 20Ω

increasing Q by 10Ω

making product RQ=2200(Ω)2