What is the effect of increasing the capacitance in an AC circuit on the capacit

Practice Questions

Q1
What is the effect of increasing the capacitance in an AC circuit on the capacitive reactance?
  1. Increases
  2. Decreases
  3. Remains the same
  4. Becomes zero

Questions & Step-by-Step Solutions

What is the effect of increasing the capacitance in an AC circuit on the capacitive reactance?
  • Step 1: Understand what capacitive reactance (X_C) is. It is a measure of how much a capacitor resists the flow of alternating current (AC).
  • Step 2: Know the formula for capacitive reactance: X_C = 1/(2πfC), where f is the frequency of the AC signal and C is the capacitance.
  • Step 3: Identify what happens when you increase the capacitance (C) in the formula. If C increases, the denominator (2πfC) becomes larger.
  • Step 4: Realize that if the denominator of a fraction increases, the overall value of the fraction decreases.
  • Step 5: Conclude that increasing the capacitance (C) results in a decrease in capacitive reactance (X_C).
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