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A positive point charge is released from rest at a distance r 0 from a position line chare with uniform density. The speed (v) of the point charge, as a function of instantaneous distance r from line charge, is proportional distance r from line charge, is proportional to – r 0

1. 0 r / r e v + ∝
2. ⎟ ⎟ ⎠ ⎞ ⎜ ⎜ ⎝ ⎛ ∝ 0 r r n v A
3. ⎟ ⎟ ⎠ ⎞ ⎜ ⎜ ⎝ ⎛ ∝ 0 r r v
4. ⎟ ⎟ ⎠ ⎞ ⎜ ⎜ ⎝ ⎛ ∝ 0 r r n v A

Correct answer: ⎟ ⎟ ⎠ ⎞ ⎜ ⎜ ⎝ ⎛ ∝ 0 r r n v A

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