Q.
In the given circuit if point $C$ is connected to the earth and a potential of $+ 2000\ V$ is given to the point $A,$ the potential at $B$ is
A) $1500\ V$
B) $1000\ V$
C) $500\ V$
D) $400\ V$
Explanation
(c) The given circuit can be redrawn as follows
[image:1_image386.emf]
$\left( V_{A} - V_{B} \right) = \left( \frac{15}{5 + 15} \right) \times 2000 \Rightarrow V_{A} - V_{B} = 1500V$
$\Rightarrow 2000 - V_{B} = 1500V \Rightarrow V_{B} = 500V$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.