5K Electromagnetic Induction# 5K10 Induced Currents and Forces# Damped%20galvanometer Skipping%20rope 5K20 Eddy Currents# Arago’s%20compass%20needle Arago’s%20disk 5K30 Transformers# Electric%20power%20transmission%20line Transformer 5K40 Motors and Generators# Electric%20motor%20_synchronous%20motor_