A positive point charge is|Electrostatics|JEE MAIN 2019

JEE MAIN 2019

08-04-2019 S2

Question

A positive point charge is released from rest at a distance $r_0$ from a positive line charge with uniform density. The speed $(v)$ of the point charge, as a function of instantaneous distance $r$ from line charge, is proportional to:

Select the correct option:

$v \propto \sqrt{\ln \left(\frac{r}{r_0}\right)}$

$v \propto \mathbf{e}^{+r / r_0}$

$v \propto \ln \left(\frac{r}{r_0}\right)$

$v \propto\left(\frac{r}{r_0}\right)$

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

Question Tags

JEE Main

Physics

Medium

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