CBSE Class 12-science Answered
Two charges +q and +q are kept at distance of r from each other.If seperation is decreased ,what happens to work done?If one of the charges is replaced by -q and the seperation is decreased what happens to the work done?
Asked by Rajeev | 22 May, 2015, 09:03: AM
Expert Answer
When two charges +q and +q are seperated by a distance r, the electrostatic force of repulsion devloped between them which keep them apart even if the seperation decreased.
Electric potential due to charge varies inversely as the distance from the charge i.e. 
Therefore, work done also varies inversely as the distance from the charge varies.Hence, as the distance decreased work done also decreased.
Therefore, work done also varies inversely as the distance from the charge varies.Hence, as the distance decreased work done also decreased. When one of charges is replaced by -q and the seperation is decreased. seperated by distance is called electric diple and electrostatic force of attraction devloped between them.
Electric potential due to charge varies inversely as the distance from the charge i.e.
Work done is given as w = Vq. Therefore, work done also varies inversely as the distance from the charge varies. Hence, as the distance decreased work done also decreased.
Answered by Priyanka Kumbhar | 22 May, 2015, 04:03: PM
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