AExE01 · Chapter 1Basic Electrical & Electronics🏛️ Past Licensure QuestionID: 29a41186
Which passive circuit component opposes any instantaneous change in electric current?
Which passive circuit component opposes any instantaneous change in electric current?
Multiple Choice Options
- A✓ Correct Option
Inductor
- B
Resistor
- C
Capacitor
- D
Diodes
Detailed Technical Solution & Explanation
According to Faraday's Law of Electromagnetic Induction and Lenz's Law, when current through an inductor changes, an opposing back-EMF is induced (), which directly opposes any instantaneous change in current.
Option Analysis:
•
Option A (Inductor): Correct. An inductor stores energy in a magnetic field and resists changes in current ().
•
Option B (Resistor): Incorrect. A resistor opposes current flow instantaneously () without opposing changes in current.
•
Option C (Capacitor): Incorrect. A capacitor opposes changes in voltage ().
•
Option D (Diodes): Incorrect. Diodes control direction of current flow, not rate of change.
Reference: Mock Test 05NEC Licensure Syllabus