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Two protons are moving parallel to x-axi...

Two protons are moving parallel to x-axis in opposite directions with velocity v. At an instant, when they are apart by a distance r, the ratio of the magnitudes of magnetic and electric forces acting on one of the protons is:

A

`(mu_(0) epsilon_(0))/(v^(2))`

B

`(mu_(0))/(epsilon_(0)v^(2))`

C

`mu_(0) epsilon_(0)v^(2)`

D

`mu_(0) epsilon_(0)`

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