Ohm’s Law

The current through a metallic conductor is directly proportional to the potential difference across the ends if the temperature and other physical conditions are constant.

A Brief Observation of Resistors in parallel

Resistors can also be connected in parallel where the current from the source splits into separate branches, as is obvious in Figure 4. The wiring in houses and buildings, for example, are arranged so all electric devices are in parallel. Naturally, parallel wiring is a preference here because if one device is disconnected the current to the others is not interrupted. The difference in a series circuit is that if one device is disconnected, the current is stopped to all others.