Question

In the given circuit, if point $C$ is connected to the earth and a potential of $2000\text{V}$ is given to point $A$. The potential at $B$ is

• A. $1500\text{V}$
• B. $1000\text{V}$
• C. $400\text{V}$
• D. $500\text{V}$

Answer 1

The correct option is D $500\text{V}$

Given circuit can be rearranged as,
$V_1=\frac{V\times 5}{5+15}=\frac{2000\times 5}{20}=500$
$\Rightarrow V_B-V_C=500$
Since $V_C=0$ $\Rightarrow V_B=500$
Hence, the correct answer is (D).