railway RRB Group D Mock Test Series 2024-25 Physics Capacitance Energy Stored in an Electric Field

The formula for Energy density due to Electric field: 

1
\(U_e = \frac{1}{2} ϵ_0 E^2\)
2
\(U_e = {2} ϵ_0 E^2\)
3
\(U_m = \frac{1}{2} \frac{B^2}{μ_0}\)
4
\(U_m = {2} \frac{B^2}{μ_0}\)
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