10/06/2026
A wire turns a compass. Nothing touches it. How? 🧭⚡
One compass gives us a clue. A circle of compasses reveals the pattern. Then we reverse the current—and you get to predict what happens next.
That “wait… I get it!” moment is what learning should feel like.
Save this video, try the right-hand rule as you watch, and share it with a student learning electromagnetism. The circles show magnetic-field direction; they are not particles orbiting the wire. This demonstration shows an idealized long, straight wire whose field dominates Earth’s field.
📣 Ontario parents: does your child need help making math click?
I’m Kamran, the tutor behind MATH101. In patient online 1:1 sessions for Grades 3–12, we work on a shared whiteboard, build understanding, and practise one step at a time.
MATH101 is here for tutoring AND learning resources:
🌐 Book a free trial: https://math101.ca
📚 Explore free Ontario lessons: https://learn.math101.ca
📞 Call or text Kamran: +1 (289) 981-1899
Send your child’s grade and the topic they need help with. Pause the final screen and screenshot the contact details so you have them handy.