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

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Question: If the voltage across a capacitor in an AC circuit is 100 V and the capacitive reactance is 50 ohms, what is the current through the capacitor? (2021)

Options:

  1. 2 A
  2. 1 A
  3. 0.5 A
  4. 0.25 A

Correct Answer: 1 A

Exam Year: 2021

Solution: 

Current I = V/Xc = 100 V / 50 ohms = 2 A.

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

Practice Questions

Q1
If the voltage across a capacitor in an AC circuit is 100 V and the capacitive reactance is 50 ohms, what is the current through the capacitor? (2021)
  1. 2 A
  2. 1 A
  3. 0.5 A
  4. 0.25 A

Questions & Step-by-Step Solutions

If the voltage across a capacitor in an AC circuit is 100 V and the capacitive reactance is 50 ohms, what is the current through the capacitor? (2021)
  • Step 1: Identify the voltage across the capacitor, which is given as 100 V.
  • Step 2: Identify the capacitive reactance, which is given as 50 ohms.
  • Step 3: Use the formula for current in an AC circuit with a capacitor: I = V / Xc.
  • Step 4: Substitute the values into the formula: I = 100 V / 50 ohms.
  • Step 5: Calculate the current: I = 2 A.
  • Ohm's Law in AC Circuits – The relationship between voltage, current, and reactance in an AC circuit, where current is calculated as the voltage divided by the capacitive reactance.
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