What does C stand for in ICE?

• A. Conductive constant
• B. Capacitance value
• C. Current
• D. Capacitive reactance

Answer: (D)

In this area of AC circuit analysis, the letter C represents the capacitance value of a capacitor. The capacitive reactance, which is the opposition the capacitor provides to AC, is a separate quantity denoted X_C and is defined by X_C = 1/(ωC). So C tells you how much capacitance there is, and it directly influences the magnitude of the capacitive reactance, but C itself is not the reactance.

Why the other ideas don’t fit: the phrase “conductive constant” isn’t a standard term in this context; “current” is commonly denoted by I, not C; and “capacitive reactance” is the reactive effect (X_C), not what the letter C represents in the symbol for the capacitor’s property.

So the key point is that C stands for capacitance (the capacitor’s value), with capacitive reactance being the derived quantity that depends on C and frequency.