at a science museum, samantha finds some stationary bikes with magnets attached to their back wheel. when…
at a science museum, samantha finds some stationary bikes with magnets attached to their back wheel. when samantha pedals a bike, the magnets on the wheel rotate through a coil of wire. this produces an electric current that lights up a series of lightbulbs. she then pedals faster, increasing the speed of the magnets through the coil. how would pedaling the bike faster affect the electric current generated? choose 1 answer: a it would increase the electric current generated. b it would decrease the electric current generated. c it would not affect the electric current generated.
Answer
Brief Explanations:
According to Faraday's law of electromagnetic - induction, the induced electromotive force (emf) and thus the induced current in a coil is directly proportional to the rate of change of magnetic flux through the coil. When Samantha pedals the bike faster, the speed of the magnets through the coil increases, which means the rate of change of magnetic flux through the coil increases. So, the induced electric current increases.
Answer:
A. It would increase the electric current generated.