The effective resistance between points P and Q of the electrical circuit shown in the figure is

Question

The effective resistance between points P and Q of the electrical circuit shown in the figure is <img class="img-fluid question-image" alt="Question" src="https://cdn.tardigrade.in/q/nta/p-t1dymsmobj7s.png" /> (A) (R/2) (B) R (C) (3 R/2) (D) 2R

Tardigrade Admin · Accepted Answer

According balanced wheat stone bridge <img class="img-fluid question-image" alt="Solution" src="https://cdn.tardigrade.in/q/nta/p-t1dymsmohg8p.png" /> (1/Re q)=(1/2 R)+(1/2 R)+(1/R) =(1 + 1 + 2/2 R)=(2/R) Re q=(R/2)

Q. The effective resistance between points $P$ and $Q$ of the electrical circuit shown in the figure is

$\frac{R}{2}$

$R$

$\frac{3 R}{2}$

$2 R$

According balanced wheat stone bridge

$\frac{1}{R _{e q}} = \frac{1}{2 R} + \frac{1}{2 R} + \frac{1}{R}$
$= \frac{1 + 1 + 2}{2 R} = \frac{2}{R}$
$R_{e q} = \frac{R}{2}$

Q. The effective resistance between points P and Q of the electrical circuit shown in the figure is

2R​

R

23R​

2R

According balanced wheat stone bridge Req​1​=2R1​+2R1​+R1​ =2R1+1+2​=R2​ Req​=2R​

Q. The effective resistance between points $P$ and $Q$ of the electrical circuit shown in the figure is

$\frac{R}{2}$

$R$

$\frac{3 R}{2}$

$2 R$

According balanced wheat stone bridge

$\frac{1}{R _{e q}} = \frac{1}{2 R} + \frac{1}{2 R} + \frac{1}{R}$
$= \frac{1 + 1 + 2}{2 R} = \frac{2}{R}$
$R_{e q} = \frac{R}{2}$