A positive point charge is released from rest at a distance ro 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:

\({\rm{v}} \propto {\rm{ln}}\left( {\frac{{\rm{r}}}{{{{\rm{r}}_{\rm{o}}}}}} \right)\)

\({\rm{v}} \propto {{\rm{e}}^{ + {\rm{r}}/{{\rm{r}}_{\rm{o}}}}}\)

\({\rm{v}} \propto \sqrt {{\rm{ln}}\left( {\frac{{\rm{r}}}{{{{\rm{r}}_{\rm{o}}}}}} \right)} \)

\({\rm{v}} \propto \left( {\frac{{\rm{r}}}{{{{\rm{r}}_{\rm{o}}}}}} \right)\)

A positive point charge is released from rest at a distance ro from a

1.	A positive point charge is released from rest at a distance ro 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:
A.	\({\rm{v}} \propto {{\rm{e}}^{ + {\rm{r}}/{{\rm{r}}_{\rm{o}}}}}\)
B.	\({\rm{v}} \propto \sqrt {{\rm{ln}}\left( {\frac{{\rm{r}}}{{{{\rm{r}}_{\rm{o}}}}}} \right)} \)
C.	\({\rm{v}} \propto {\rm{ln}}\left( {\frac{{\rm{r}}}{{{{\rm{r}}_{\rm{o}}}}}} \right)\)
D.	\({\rm{v}} \propto \left( {\frac{{\rm{r}}}{{{{\rm{r}}_{\rm{o}}}}}} \right)\)
Answer» C. \({\rm{v}} \propto {\rm{ln}}\left( {\frac{{\rm{r}}}{{{{\rm{r}}_{\rm{o}}}}}} \right)\)

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A positive point charge is released from rest at a distance ro 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:

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