Four point $+ve$ charges of same magnitude $(Q)$ are placed at four corners of a rigid square frame as shown in figure. The plane of the frame is perpendicular to $Z$ axis. If a $-ve$ point charge is placed at a distance $z$ away from the above frame $(z<< L)$ then
Four point $+ve$ charges of same magnitude $(Q)$ are placed at four corners of a rigid square frame as shown in figure. The plane of the frame is perpendicular to $Z$ axis. If a $-ve$ point charge is placed at a distance $z$ away from the above frame $(z<< L)$ then
- [AIIMS 2005]
- A
$-ve$ charge oscillates along the $Z$ axis.
- B
It moves away from the frame
- C
It moves slowly towards the frame and stays in the plane of the frame
- D
It passes through the frame only once.
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- [KVPY 2020]
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- [JEE MAIN 2018]