Using the concept of energy density, find the total energy stored in a a. parallel plate capacitor b. charged spherical conductor.
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To find the total energy stored in a parallel plate capacitor and a charged spherical conductor using the concept of energy density, we can follow these steps:
### Part A: Energy Stored in a Parallel Plate Capacitor
1. **Understand Energy Density**: The energy density (u) in an electric field is given by the formula:
\[
u = \frac{1}{2} \epsilon_0 E^2
\]
...
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