CBSE Class XII Physics 2009 Question Papers with Solutions

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Question : 1
Total: 30
Defined the term of “Potential energy” of charge ‘q’ at a distance ‘r’ in an external electric field.
Solution:  
The electric potential energy is the external work done in bringing the charge q frominfinity to the point r in the electric field . It is assumed that the potential energy ofthe system is zero when the charge separation is infinite.
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