How capacitor can prevent sparking?

A capacitor can prevent sparking by smoothing out voltage fluctuations in electrical circuits. When there are sudden changes in voltage, the capacitor temporarily stores excess energy and releases it when needed, reducing the risk of arcing or sparking at contacts or switches. This energy absorption helps maintain a stable voltage, thereby minimizing the chances of electrical discharge that can lead to sparking. Additionally, capacitors can filter out noise and transient spikes, further enhancing circuit stability and safety.