If the voltage across a capacitor in an AC circuit is 100V and the capacitive re

Practice Questions

Q1
If the voltage across a capacitor in an AC circuit is 100V and the capacitive reactance is 50 ohms, what is the current? (2023)
  1. 2A
  2. 0.5A
  3. 5A
  4. 10A

Questions & Step-by-Step Solutions

If the voltage across a capacitor in an AC circuit is 100V and the capacitive reactance is 50 ohms, what is the current? (2023)
  • Step 1: Identify the voltage across the capacitor, which is given as 100V.
  • Step 2: Identify the capacitive reactance, which is given as 50 ohms.
  • Step 3: Recall Ohm's law, which states that current (I) is equal to voltage (V) divided by reactance (Xc).
  • Step 4: Substitute the values into the formula: I = V / Xc.
  • Step 5: Calculate the current: I = 100V / 50Ω.
  • Step 6: Perform the division: 100 divided by 50 equals 2.
  • Step 7: Conclude that the current is 2A.
  • Ohm's Law in AC Circuits – Ohm's Law can be applied to AC circuits using the formula I = V/Xc, where I is the current, V is the voltage, and Xc is the capacitive reactance.
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