Competency #8
Explain the differences and interconnections between electricity and magnetism
Learning Objective l
- l. Give an example of how a magnet can be used to produce an electric current
Question
Write down your answer to the following question:
The strip on the back of a credit card is magnetized. The credit card reader turns the magnetic field into an electrical current. Why do you have to “swipe” the card through the reader? Why does the reader fail to work if you swipe too slowly or just leave the card still?
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