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A point charge –q revolves around a fixe...

A point charge `–q` revolves around a fixed charge `+Q` in elliptical orbit. The minimum ar.d maximum distance of q from Q are `r_1` and `r_2`, respectively. The mass of revolving particle is `Q gt q` and assume no gravitational effects. Find the velocity of q at positions when it is at `r_1` and `r_2` distance from Q.

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