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Mistake Master · AP Physics C: E&M · Unit 12 · Step-Through Animation

A Sideways Push That Never Stops

You'll learnwhat a magnetic field does to a moving charge: it turns it, and it never speeds it up.

A proton flies into a magnetic field and bends into a circle. Twelve short steps; press Next for each one.

12 STEPS · 5 QUICK CHECKS · A SIDEWAYS PUSH · A CIRCLE · ONE SPEED GOES STRAIGHT · v4

a sideways push makes a circle · the speed never changes
Before you start
What you're looking at
A magnetic field pointing into the screen, drawn as crosses. A charged particle moves through it. The yellow arrow is which way it is going; the cyan arrow is the push it feels.
The question
Which way does the particle turn, and can the field ever make it go faster?
Step 1 / 12