Question

Asked Nov 13, 2019

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Assuming the Earth's magnetic field averages about 0.50×10−4 T near Earth's surface, estimate the total energy stored in this field in the first 6.0 km above Earth's surface. The radius of Earth is 6380 km?

Step 1

Consider the magnetic field of Earth is denoted by *B*, Earth’s radius is denoted by *R* and *R’* is the distance above the surface of the earth.

Step 2

Write the formula for energy density (*U _{B}*) of the magnetic field and plug required values to find it.

Step 3

Find the effective volume (*Vef...*

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