AExE01 · Chapter 1Basic Electrical & Electronics🏛️ Past Licensure QuestionID: 0752bd5b
The current passing through the dielectric of a capacitor is called:
The current passing through the dielectric of a capacitor is called:
Multiple Choice Options
- A✓ Correct Option
Displacement current
- B
Conduction current
- C
Leakage current
- D
Charging current
Detailed Technical Solution & Explanation
According to Maxwell-Ampère's law, while physical charge conduction occurs in connecting wires, the apparent current passing through the insulating dielectric gap between capacitor plates is displacement current: .
Option Analysis:
•
Option A (Displacement current): Correct. Displacement current accounts for the rate of change of electric displacement field through the dielectric.
•
Option B (Conduction current): Incorrect. Conduction current involves physical drift of charge carriers in the external conductors, not through the dielectric.
•
Option C (Leakage current): Incorrect. Leakage current is an unwanted parasitic current due to imperfect dielectric insulation.
•
Option D (Charging current): Incorrect. Charging current is a generic operational term for the transient current, but the physical electrodynamic current through the capacitor is displacement current.
Reference: Demo2 · Set 2NEC Licensure Syllabus