Refer to Figure 5 (image attached) : Why does LED turned on quickly and turned off gradually, when there is a 47uF capacitor placed in the circuit ? What will happen when 47uF capacitor will be replaced by 470uF capacitor?Also tell, what difference do you observe when there is no capacitor in the circuit?

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Capacitor

The capacitor is an element used to store electrical energy in the electrical field. A capacitor is a form of passive energy.