Speed from circular path radius
A charged particle in a school transformer demonstration follows radius \(0.35\,\text{m}\) in a \(0.22\,\text{T}\) field. With \(q=2.4e-6\,\text{C}\) and \(m=2.2e-6\,\text{kg}\), calculate speed. 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.
Write a full answer
Now write the response in full, in your own words — this is what the exam asks for. The AI marks it on the same moves you built above (focus, evidence, technique, judgement) and gives feedback on reasoning, evidence, and expression.