Field on loop axis

A circular loop of radius \(R\) carries a current \(I\).

Question Text

At what distance \(z\) along the axis of the loop is the magnetic field one-half its value at the centre of the loop? Give your answer as a multiple of \(R\).

Answer Section

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\(z=\) \(R\)

Attribution

Problem is from the OpenStax University Physics Volume 2 textbook, licensed under the CC-BY 4.0 license.