Two equal charges of magnitude $Q$ each are placed at a distance $d$ apart. Their electrostatic energy is $E$. A third charge $-Q / 2$ is brought midway between these two charges. The electrostatic energy of the system is now
Two equal charges of magnitude $Q$ each are placed at a distance $d$ apart. Their electrostatic energy is $E$. A third charge $-Q / 2$ is brought midway between these two charges. The electrostatic energy of the system is now
- [KVPY 2014]
- A
$-2 E$
- B
$-E$
- C
$0$
- D
$E$
Similar Questions
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$(b)$ What is the force of repulsion if each sphere is charged double the above amount, and the distance between them is halved?
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