Deep Dive: E5B06
The correct answer is C: The imaginary part of admittance. What is susceptance is the imaginary part of admittance. Susceptance is the imaginary component of admittance (Y = G + jB). For amateur radio operators, this is important for circuit theory. Understanding this helps when working with admittance.
Why Other Answers Are Wrong
Option A: Incorrect. Magnetic impedance of circuit isn't susceptance - susceptance is imaginary part of admittance. Magnetic impedance isn't susceptance. Option B: Incorrect. Ratio of magnetic field to electric field isn't susceptance - susceptance is imaginary part of admittance. Field ratio isn't susceptance. Option D: Incorrect. Measure of transformer efficiency isn't susceptance - susceptance is imaginary part of admittance. Transformer efficiency isn't susceptance.
Exam Tip
Susceptance = imaginary part of admittance. Think 'S'usceptance = 'I'maginary part of 'A'dmittance. Susceptance is the imaginary component of admittance (Y = G + jB). Not magnetic impedance, not field ratio, not transformer efficiency - just imaginary part of admittance.
Memory Aid
Susceptance = imaginary part of admittance. Think 'S'usceptance = 'I'maginary part. Susceptance is the imaginary component of admittance (Y = G + jB). Important for circuit theory.
Real-World Example
Susceptance: It's the imaginary part of admittance. Admittance Y = G + jB, where G is conductance (real part) and B is susceptance (imaginary part). This is what susceptance is - the imaginary part of admittance.
Source & Coverage
Question Pool: 2024-2028 Question Pool
Subelement: E5B
Reference: 2024-2028 Question Pool · E5 - Electrical Principles
Key Concepts
Verified Content
Question from the official FCC Extra Class pool. Explanation reviewed by licensed amateur radio operators and mapped to the E5B topic.