A current in a wire increases from 2 A to 6 A. How will the magnetic field 0.01 m from the wire change?

Question

Physics

Annabel Levine

6 March, 14:18

A current in a wire increases from 2 A to 6 A. How will the magnetic field 0.01 m from the wire change?

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Answers (2)

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Lawrence Bernard · Answer 1

It increases to three times its original value. Given the same radius of wire and other constant property. current is directly proportional to the magnetic field.

B1=B2

MoI1/2pir=MoI2/2pir; cancel the same values on both sides

B2/B1=6/2 = 3