If 48 eV of energy is required to move a charge through a potential difference of 12 V determine the charge involved?

To find the charge involved, we use the formula: energy = charge * potential difference. Given that 48 eV of energy is required to move a charge through a potential difference of 12 V, we can plug the values into the formula: 48 = charge * 12. Solving for charge gives us a value of 4 e.