Answer:
1.4 x 10^9 J
Explanation:
magnetic field, B = 7 x 10^-5 T
Area, A = 4.8 x 10^8 m^2
height, H = 1500 m
the formula for the energy density is given by
[tex]u=\frac{B^{2}}{2\mu _{0}}[/tex]
Total energy = Energy density x Volume
[tex]U=\frac{B^{2}}{2\mu _{0}}\times A\times H[/tex]
[tex]U=\frac{\left (7\times 10^{-5} \right )^{2}}{2\times 4\times 3.14\times 10^{-7}}\times 4.8\times 10^{8}\times 1500[/tex]
U = 1.4 x 10^9 J
Thus, the maximum magnetic energy stored is 1.4 x 10^9 J
