I am currently having some difficulty in recalling/understanding the potential difference across parallel circuits. Why is the potential difference across individual components of the parallel circuit the same? Let's for example say 2 resistors of different resistance are connected in parallel. As p.d. is defined as the amount of energy dissipated by the charges as they pass through the resistor (am I wrong in the definition?), why is it so that for different resistances, the energy dissipated by the charges are the same?