## Conceptual Physics (12th Edition)

For two or more devices connected in parallel, the voltage is the same across each device. This is Rule 1 for parallel circuits, on page 444, and discussed on pages 443-444. This is also illustrated in Figure 23.18. Ohm's Law states that the current through a resistor depends on the voltage, divided by the resistance. $$Current = \frac{voltage}{resistance}$$ For identical voltages, a larger resistance R means that the current is lower, as predicted by Ohm's Law. The power is P = (current)(voltage), so less power is dissipated in the larger R.