What should be done to terminals of a capacitor when they are exposed to potential contact by people?

The most appropriate action when terminals of a capacitor are exposed is to insulate them. Insulating the terminals ensures that they are protected from unintended contact by people, which can prevent electric shocks or other hazards associated with handling electrical components. Insulation acts as a barrier, providing safety in environments where people may come into contact with electrical equipment.

Leaving the terminals open can create a risk of accidental touch and potential injury. Shortening the terminals creates a risk of damaging the capacitor or causing unwanted discharges. Disconnecting them might be suitable in specific scenarios but does not address the ongoing risk of exposure. Insulating is the best practice because it actively prevents access while allowing for the safe continuation of operations involving the capacitor.