How is voltage defined in terms of current and resistance?

Voltage is defined in terms of current and resistance through Ohm's Law, which states that the voltage across a conductor between two points is directly proportional to the current flowing through it, provided the temperature remains constant. The relationship can be mathematically expressed as:

Voltage = Current x Resistance.

This means that if you know the amount of current flowing through a circuit and the resistance of that circuit, you can calculate the voltage. This fundamental principle underpins many electrical engineering concepts and circuit analysis, enabling the understanding of how devices operate within an electrical circuit.

The alternative options highlight different electrical relationships but do not correctly define the relationship between voltage, current, and resistance as laid out by Ohm's Law. For instance, voltage defined as resistance divided by current does not reflect the correct relationship, as it would imply that an increase in current results in a decrease of voltage, contrary to what is observed.