Discussion
Comparing a supercapacitor with a battery for regenerative braking, the capacitor is preferred because braking energy arrives
Answer: C
Correct answer: in a brief high powered burst
Braking a vehicle returns a large amount of energy in a few seconds, which is a very high power for a short time. A supercapacitor absorbs that burst without difficulty and can do so at every stop for the life of the vehicle; a battery asked to accept the same current repeatedly would be heated and degraded, and its charge acceptance is limited in any case. The usual arrangement pairs the two, the capacitor taking the peaks and the battery holding the energy.
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