Electromagnet Strength Test
One coil lifts more clips.
Teaching & key ideas
What you do: Compare coil with fewer vs more turns briefly.
What students see: One coil lifts more clips.
Why it works: Current creates magnetic field; more coil turns can strengthen it.
Question to ask: What can we change to make an electromagnet stronger?
Lesson flow
Predict → demonstrate → observe → briefly explain → ask: What can we change to make an electromagnet stronger?