Electrostatic Potential and Capacitance - Result Question 14

16. Three charges, each $+q$, are placed at the corners of an isosceles triangle $ABC$ of sides $BC, AC$ and $A B$. D and $E$ are the mid points of $B C$ and $CA$. The work done in taking a charge $Q$ from $D$ to $E$ is

[2011M] (a)

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Answer:

Correct Answer: 16. (c)

Solution:

  1. (c) $AC=BC$

$V_D=V_E$ We have, $W=Q(V_D-V_E)$ $\Rightarrow W=0$