What is the force required to produce a current of one ampere through a resistance of one ohm?

The force required to produce a current of one ampere through a resistance of one ohm is expressed in volts. According to Ohm’s Law, the relationship between voltage (V), current (I), and resistance (R) is defined as V = I × R. If we substitute one ampere for current and one ohm for resistance into the equation, we find that V = 1 A × 1 Ω, which gives us a voltage of one volt.

The volt is the unit of electrical potential or electromotive force, which is what you would interpret as the "force" in this context. This means that to achieve a current of one ampere flowing through a resistor of one ohm, a potential difference of one volt must be applied across the resistor.

Understanding this relationship is fundamental to electrical principles, especially in working with circuits and components where specific voltage levels are necessary to achieve desired current flows.