What is the impedance of a circuit with a 10Ω resistor and a 5Ω inductor at a fr

Practice Questions

Q1
What is the impedance of a circuit with a 10Ω resistor and a 5Ω inductor at a frequency of 60Hz (assuming inductive reactance of 3Ω)?
  1. 10Ω
  2. 13Ω

Questions & Step-by-Step Solutions

What is the impedance of a circuit with a 10Ω resistor and a 5Ω inductor at a frequency of 60Hz (assuming inductive reactance of 3Ω)?
  • Step 1: Identify the resistance (R) of the circuit, which is given as 10Ω.
  • Step 2: Identify the inductive reactance (X_L) of the inductor, which is given as 3Ω.
  • Step 3: Use the formula for impedance (Z), which is Z = √(R^2 + X_L^2).
  • Step 4: Substitute the values into the formula: Z = √(10^2 + 3^2).
  • Step 5: Calculate R^2: 10^2 = 100.
  • Step 6: Calculate X_L^2: 3^2 = 9.
  • Step 7: Add the results from Step 5 and Step 6: 100 + 9 = 109.
  • Step 8: Take the square root of the sum: Z = √109.
  • Step 9: Calculate the square root: Z ≈ 13Ω.
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