Teaching Minds-On Experiments on Electromagnetism in Secondary Schools

Interaction between coils

Two coils, of a single turn, facing each other and each carrying a current attract or repel each other, in the same way observed with bar magnets depending on the direction of the current in each coil. 
Two coils, each with several turns, are placed together. When a current is passed through each they attract or repel according to the direction of the currents, as in the case of the previous demonstration.
The effects are amplified with respect to those occurring in the previous demonstration.
The magnetic effects depend upon the number of turns on the coils.

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