AExE01 · Chapter 1Basic Electrical & Electronics🏛️ Past Licensure QuestionID: cdcde5cb
According to Thevenin's theorem, what is the equivalent internal resistance looking into the output terminals of a linear network?
According to Thevenin's theorem, what is the equivalent internal resistance looking into the output terminals of a linear network?
Multiple Choice Options
- A
zero
- B
infinity
- C
V/R
- D✓ Correct Option
R
Detailed Technical Solution & Explanation
According to Thevenin's theorem, the internal equivalent resistance () of a linear network across its open terminals is determined by turning off all independent sources (short-circuiting independent voltage sources, open-circuiting independent current sources) and calculating the resulting driving-point resistance, denoted as .
Option Analysis:
•
Option A (zero): Incorrect. Ideal voltage source has zero internal resistance, but general Thevenin equivalent has finite .
•
Option B (infinity): Incorrect.
•
Option C (V/R): Incorrect. Current unit, not resistance.
•
Option D (R): Correct. Represents the internal Thevenin equivalent resistance .
Reference: Mock Test 01NEC Licensure Syllabus