The earths magnetic fi eld, like any magnetic fi eld,
Chapter , Problem 49(choose chapter or problem)
The earths magnetic fi eld, like any magnetic fi eld, stores energy. The maximum strength of the earths fi eld is about 7.0 3 1025 T. Find the maximum magnetic energy stored in the space above a city if the space occupies an area of 5.0 3 108 m2 and has a height of 1500 m.
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