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In an AC circuit, if the total current is 5A and the total voltage is 100V, what

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Question: In an AC circuit, if the total current is 5A and the total voltage is 100V, what is the impedance? (2021)

Options:

  1. 20Ω
  2. 25Ω
  3. 30Ω
  4. 15Ω

Correct Answer: 25Ω

Exam Year: 2021

Solution: 

Impedance Z = V/I = 100V/5A = 20Ω.

In an AC circuit, if the total current is 5A and the total voltage is 100V, what

Practice Questions

Q1
In an AC circuit, if the total current is 5A and the total voltage is 100V, what is the impedance? (2021)
  1. 20Ω
  2. 25Ω
  3. 30Ω
  4. 15Ω

Questions & Step-by-Step Solutions

In an AC circuit, if the total current is 5A and the total voltage is 100V, what is the impedance? (2021)
  • Step 1: Identify the total voltage (V) in the circuit, which is given as 100V.
  • Step 2: Identify the total current (I) in the circuit, which is given as 5A.
  • Step 3: Use the formula for impedance (Z), which is Z = V / I.
  • Step 4: Substitute the values into the formula: Z = 100V / 5A.
  • Step 5: Calculate the result: Z = 20Ω.
  • 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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