D4 notes: Electromagnetic induction
Over the last 10 years, worldwide sales of electric cars have increased from 20 thousand to 5 million. Norway is in the lead with 50% of all electric car sales. This makes the topic of electromagnetic induction a very current topic in more ways than one. The neat thing is that a coil in a magnetic field is not only a motor but also a generator, so can be used to power the car and charge the battery. It obviously...