a straight current carrying wire carries an electric current of 200 A..what will be the magnetic field due to this current at point 2m away from the wire?...pls give me the formula

Asked by tluser3 | 3rd Jan, 2018, 09:23: PM

Expert Answer:

The formula is begin mathsize 12px style B space equals space fraction numerator mu subscript 0 space I over denominator 2 pi d end fraction end style, where I is current, d is distance from wire and μ0 is permitivity of free space.
begin mathsize 12px style B space equals space fraction numerator 4 pi cross times 10 to the power of negative 7 end exponent cross times 200 over denominator 2 cross times pi cross times 2 end fraction space equals space 200 cross times 10 to the power of negative 7 end exponent space T e s l a end style
 

Answered by  | 3rd Jan, 2018, 11:11: PM

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