It seems like you're asking about the formula \( V = I \cdot R \), which is Ohm's Law.
In this formula:
- \( V \) represents the voltage (in volts, V),
- \( I \) represents the current (in amperes, A),
- \( R \) represents the resistance (in ohms, \( \Omega \)).
So, **Ohm's Law** states that the voltage across a resistor is equal to the current flowing through it multiplied by the resistance.
This is one of the most fundamental equations in electrical engineering and helps to understand how voltage, current, and resistance are related in a circuit.