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Question
In Figure 1 below, a charge Q is fixed. Another charge q is moved along a circular arc MN of radius r around it, from the point M to the point N such that the length of the arc MN = l. The work done in this process is:
figure 1
Options
zero
`1/(4piε_0).(Qq)/r^2l`
`(Qq)/(2ε_0r^2)l`
`(Qq)/(2piε_0r^2)`
Solution
In Figure 1 below, a charge Q is fixed. Another charge q is moved along a circular arc MN of radius r around it, from the point M to the point N such that the length of the arc MN = l. The work done in this process is: Zero
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