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Magnetic Field

The magnetic ...

Question

The magnetic field at a distance 'r' from a long wire carrying current 'i' is 0.4 Tesla. The magnetic field at a distance '2r' is

A

0.2 tesla

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B

0.8 tesla

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C

0.1 tesla

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D

1.6 tesla

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Solution

The correct option is A 0.2 tesla
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