Match each current to its field

Exercise and reference answers

Matching pairs

1. Left

   Centre of a loop

   Right

   μ₀I / 2R

2. Left

   Long straight wire

   Right

   μ₀I / 2πr

3. Left

   Inside a solenoid

   Right

   μ₀nI

4. Left

   Inside a toroid

   Right

   μ₀NI / 2πr

Instructions

Tap a current arrangement, then tap the expression for the magnetic field it sets up.

Explanation