The source of earth's magnetic field is best explained by _____.

Physics

2 answers:

WITCHER [35]3 years ago

4 0

The Dynamo Theory

Let Me Know If You Need Anymore Help

~Witt

Helen [10]3 years ago

3 0

Answer:

As we know that the Earth core is at high temperature and due to this high temperature the core of Earth contains large amount of molten metal.

Due to this large amount of molten metal there exist huge amount of charges or ions along with the molten metal. Now these molten metal or ions revolve around the axis of rotation of earth with the rotation of Earth around its own axis.

Due to this revolution of molten metal there exist a huge current in the earth due to motion of ions.

Now we know that magnetic field due to rotating current carrying coil is given by

$B = \frac{\mu_0 Ni}{2R}$

so here this will produce magnetic field due to rotation of earth about its own axis.

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olchik [2.2K]

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Change in time
D=72km/hr
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But the S.I unit of velocity is m/s so you woul have to change 72km/hr to m/s

Changing 72km to m

1 kilometer=1000meters
Then, 72 kilometers =?

72•1000/1
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Changing 72hours to seconds

If 1 hour = 3600 seconds
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72•3600/1

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Explanation:

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Substitute the values into the expression:
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In short, Your Final answer would be 2.093 × 10⁻²¹ J

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