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What is the force per meter on a lightning bolt at the equator that carries a...

What is the force per meter on a lightning bolt at the equator that carries a current of 20,000 A perpendicular to the Earth's 3x10-5 T field?

Answer Choices:

a.

1.20 N

 b.

120 N

 c.

60.0 N

 d.

12.0 N

 e.

0.600 N

 f.

0.0600 N
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