Teach: Electrical power

IB Physics: Teach: Electrical power

AimstextConsiderationsIt"s not obvious that P = VI but when you think of the units Volts JC-1 and Amps Cs-1 it becomes clearer. A good time to refresh the students understanding of the difference between power and energy the two experiments are quite quick but if you have one of those plug in power meters it"s even quicker. Look at the difference between power into a mobile charger when the mobile is plugged in and...

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