# Which of the…correct definition of the reactance of an inductor L?

**Which of the following equations is the correct definition of the reactance of an inductor L?**

**QUICK ANSWER…**

**A**

**DETAILS…**

**Please don’t be confused by the terms: amplitude of voltage and amplitude of current.**

**Amplitude of voltage here simply means maximum or peak voltage.****Amplitude of current here simply means maximum or peak current.**

**Now even without solving further, you should quickly know that option A is the answer… I will explain.**

**Reactance of an inductor simply means the resistance offered by the inductor which is measured in ohms. So, our answer should be in ohms.**

**We know that for a circuit containing a resistor,**

**voltage = current X resistance**

**but in this question, we are only asked about inductor and not a resistor, hence,**

**Now for the right answer to the above question:**

**Option A is correct. the unit of this expression is rightly in ohms.****Option B is incorrect. the unit of voltage X current is watt and not ohms.****C is incorrect. the unit here is certainly not ohms.****D is not the correct answer. the unit here too is not ohms.**

**HELPFUL TIPS…**

**You may please note these/this:**

**You can quickly choose the right answer by seeking for the expression that will give same unit with the reactance which is usually in ohms.**

**Use the questions and answer section to correct, express, and contribute your views.**

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**/ culled from 2019 JAMB-UTME physics question 13 /**