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Choose the correct option:- The magnetic...

Choose the correct option:- The magnetic field at a distance 'r' from long wire carrying a current is 0.8T. The magnetic field a distance 2r is

A

0.6 T

B

0.5 T

C

0.4 T

D

0.3 T

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CHETANA PUBLICATION-Magnetic Fields due to Electric Current-Exercise
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  10. Derive cyclotron formula.

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