Explanation: The "effective value" of an RF current is universally understood to be its Root Mean Square (RMS) value. The RMS value is a crucial concept in AC circuit theory, defining the equivalent DC current that would produce the same heating effect in a resistive load. Since power dissipated as heat in a resistor is proportional to the square of the current (P = I²R), the RMS value is precisely calculated to represent this equivalent heating capability. By definition, the effective (RMS) value of an RF current *is* the value that corresponds to its heating capability. They are, therefore, one and the same. Options B and C propose incorrect mathematical relationships between these two inherently equivalent concepts.