Magnetic Field Produced by Straight Currents Video Lessons

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Concept

Problem: The magnetic field 10 cm from a wire carrying a 1 A current is 2 μT. What is the field 4 cm from the wire? Express your answer with the appropriate units.

FREE Expert Solution

Magnetic field:

B=μ0I2πr

Therefore, B is proportional to 1/r

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Problem Details

The magnetic field 10 cm from a wire carrying a 1 A current is 2 μT. What is the field 4 cm from the wire? Express your answer with the appropriate units.

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