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If the total current in an AC circuit is 5A and the voltage is 120V, what is the

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Question: If the total current in an AC circuit is 5A and the voltage is 120V, what is the impedance? (2023)

Options:

  1. 24Ω
  2. 20Ω
  3. 30Ω
  4. 15Ω

Correct Answer: 20Ω

Exam Year: 2023

Solution: 

Impedance (Z) = Voltage (V) / Current (I) = 120V / 5A = 24Ω.

If the total current in an AC circuit is 5A and the voltage is 120V, what is the

Practice Questions

Q1
If the total current in an AC circuit is 5A and the voltage is 120V, what is the impedance? (2023)
  1. 24Ω
  2. 20Ω
  3. 30Ω
  4. 15Ω

Questions & Step-by-Step Solutions

If the total current in an AC circuit is 5A and the voltage is 120V, what is the impedance? (2023)
  • Step 1: Identify the total current in the AC circuit, which is given as 5A.
  • Step 2: Identify the voltage in the AC circuit, which is given as 120V.
  • Step 3: Use the formula for impedance, which is Impedance (Z) = Voltage (V) / Current (I).
  • Step 4: Substitute the values into the formula: Z = 120V / 5A.
  • Step 5: Perform the division: 120 divided by 5 equals 24.
  • Step 6: Conclude that the impedance (Z) is 24Ω.
  • Impedance Calculation – Impedance in an AC circuit is calculated using the formula Z = V / I, where Z is impedance, V is voltage, and I is current.
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