IB skill practice

Describe charged-particle motion in electromagnetic fields

Paper 1, Paper 2 5 marks Difficulty 3

Speed from circular path radius

A charged particle in a falling magnet investigation follows radius \(0.59\,\text{m}\) in a \(0.38\,\text{T}\) field. With \(q=2e-6\,\text{C}\) and \(m=3.6e-6\,\text{kg}\), calculate speed. Use the diagram labels before calculating the requested value. Enter the numerical result and choose the interpretation that matches the field physics.

Worked practice: physics data and result

Read the physical quantities first, then calculate the result and state what it means.