Grade:Upto college level

2 Answers

Abhishek Doyal
askIITians Faculty 25 Points
10 years ago
Abhishek doyal
IIT Bombay
Askiitian tutor

askiitian expert Rahul iitd
askIITians Faculty 10 Points
10 years ago
The energy density, or energy per unit volume,\frac{dU}{dV}, of theelectrostatic fieldof a continuous charge distribution is:
 u_e = \frac{dU}{dV} = \frac{1}{2} \varepsilon_0 \left|{\mathbf{E}}\right|^2.

Electric field at a distance r from the sphere is

Now for finding electrostatic energy we need to integrate energy density over the whole space from R to infinity to get the answer using the E above mentioned.

Thanks and Regards
Rahul kumar
askIITians faculty
IIT Delhi

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