What is the effect of increasing the frequency on the impedance of an inductor?
Practice Questions
Q1
What is the effect of increasing the frequency on the impedance of an inductor?
Increases
Decreases
Remains the same
Becomes zero
Questions & Step-by-Step Solutions
What is the effect of increasing the frequency on the impedance of an inductor?
Step 1: Understand what impedance is. Impedance (Z) is a measure of how much a circuit resists the flow of electric current.
Step 2: Know that an inductor is a component that stores energy in a magnetic field when electric current flows through it.
Step 3: Learn the formula for the impedance of an inductor: Z_L = jωL, where 'j' is the imaginary unit, 'ω' is the angular frequency, and 'L' is the inductance.
Step 4: Recognize that angular frequency (ω) is calculated as ω = 2πf, where 'f' is the frequency in hertz (Hz).
Step 5: Notice that as the frequency (f) increases, the angular frequency (ω) also increases because they are directly related.
Step 6: Since the impedance formula Z_L = jωL includes ω, an increase in frequency leads to an increase in Z_L.
Step 7: Conclude that the impedance of an inductor increases as the frequency increases.
