Why do we need capacitor to store energy when we already have battery to do that?

Because capacitor can store a very-very large amount of energy

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Because a capacitor can provide the stored energy back relatively slowly

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Because a capacitor can provide the stored energy back relatively quickly.

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Because batteries are obsolete

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Solution

The correct option is C Because a capacitor can provide the stored energy back relatively quickly.
A capacitor is used to store energy just like a battery. But a battery has energy stored in form of chemical energy and a capacitor has the energy stored as electrical energy.
So, a capacitor can provide energy really quickly compared to a battery.

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