Answer:
(a) 62.69 nJ/m^3
(b) 1015.22 μJ/m^3
Explanation:
Electric field, E = 119 V/m
Magnetic field, B = 5.050 x 10^-5 T
(a) Energy density of electric field = [tex]\frac{1}{2}\varepsilon _{0}E^{2}[/tex]
[tex]=\frac{1}{2}\times 8.854\times 10^{-12}\times 119\times 119[/tex]
= 6.269 x 10^-8 J/m^3 = 62.69 nJ/m^3
(b) energy density of magnetic field = [tex]\frac{B^{2}}{2\mu _{0}}[/tex]
[tex]=\frac{\left ( 5.05\times 10^{-5} \right )^{2}}{2\times 4\times 3.14\times 10^{-7}}[/tex]
= 1.01522 x 10^-3 J/m^3 = 1015.22 μJ/m^3
