The first electric generators used direct current, so they needed to be reversed manually on a regular basis in order to work properly. Nikola Tesla saw this as an inefficient way to produce electricity. As a result, Tesla used the idea of the rotating magnetic field, which had been developed by François Arago, to invent the induction motor, which reverses automatically. How is this an example of a scientist applying creativity to solve a problem?
Answer
A
Tesla investigated a new problem that no one had considered before.
B
Tesla used another scientist’s research to help develop his own solution to a problem.
C
Tesla designed a new experimental method for research.
D
Tesla invented an entirely new concept to replace an inefficient design.
Explanation
Tesla recognized that manually reversing the direct-current generators was inefficient and needed a better solution. He applied François Arago’s idea of a rotating magnetic field to develop the induction motor, which reverses automatically. This shows creativity by building on another scientist’s research to solve a problem, so the correct choice is “Tesla used another scientist’s research to help develop his own solution to a problem.”
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