1.

A parallel plate capacitor has plates of area \[A\] and separation \[d\] and is charged to a potential difference\[V\]. The charging battery is then disconnected and the plates are pulled apart until their separation is 2\[d\]. What is the work required to separate the plates?

A. \[2{{\varepsilon }_{0}}A{{V}^{2}}/d\]             
B. \[{{\varepsilon }_{0}}A{{V}^{2}}/d\]
C. \[3{{\varepsilon }_{0}}A{{V}^{2}}/d\] 
D. \[{{\varepsilon }_{0}}A{{V}^{2}}/2d\]
Answer» E.


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