Assume the average value of the vertical component of earth's magnetic field is 42 μt (downward) in some region that has an area of 3.71 × 105km2. what then is the magnitude of the net magnetic flux through the rest of earth's surface (the entire surface excluding that region).

The net magnetic flux through the rest of Earth's surface is  

Explanation:

Given that,

Magnetic field = 42 μT

Area

We need to calculate the flux per unit area

We need to calculate the total earth's surface area

We need to calculate the rest of earth's area

Put the value into the formula

We need to calculate the net magnetic flux through the rest of Earth's surface

Hence, The net magnetic flux through the rest of Earth's surface is  

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the entire statement is true and correct.  

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