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The difference between a Hybrid Capacitor and a Digital Capacitor?

What is the difference between a capacitor and a battery?

  • a. A battery stores energy while a capacitor uses the energy to do work. b. They are two names for the same thing and they work in the same way. c. They both store energy but a battery releases it slowly while a capacitor releases it all at once. d. A capacitor stores energy while a battery is used to do work (like lighting a bulb)

  • Answer:

    Have read your selections; and would guess the answer they desire is a. What I would prefer is some statement about a batteries chemical action making the electricity, compared to the capacitor which simply holds a received charge between plates.

Juancho G at Yahoo! Answers Visit the source

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Have read your selections; and would guess the answer they desire is a. What I would prefer is some statement about a batteries chemical action making the electricity, compared to the capacitor which simply holds a received charge between plates.

Lex Lodge

Of those choices, I'd go with: c. They both store energy but a battery releases it slowly while a capacitor releases it all at once. Although I don't really like the wording. A better answer would be that a battery stores energy and maintains a nearly constant voltage as it accumulates and releases energy. A capacitor by contrast has a varying voltage with its energy content, namely that energy is proportional to the square of voltage. This makes a battery a lot more feasible as a long-term power supply. Its output signal remains nearly constant as it is used, unlike a capacitor whose signal decays exponentially as it is used.

gintable

Of those choices, I'd go with: c. They both store energy but a battery releases it slowly while a capacitor releases it all at once. Although I don't really like the wording. A better answer would be that a battery stores energy and maintains a nearly constant voltage as it accumulates and releases energy. A capacitor by contrast has a varying voltage with its energy content, namely that energy is proportional to the square of voltage. This makes a battery a lot more feasible as a long-term power supply. Its output signal remains nearly constant as it is used, unlike a capacitor whose signal decays exponentially as it is used.

gintable

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