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What is the equivalent impedance (Z) of a 4Ω resistor in series with a 3Ω resist

Practice Questions

Q1
What is the equivalent impedance (Z) of a 4Ω resistor in series with a 3Ω resistor?
  1. 1Ω
  2. 3Ω
  3. 4Ω
  4. 7Ω

Questions & Step-by-Step Solutions

What is the equivalent impedance (Z) of a 4Ω resistor in series with a 3Ω resistor?
  • Step 1: Identify the resistors in the circuit. We have a 4Ω resistor (R1) and a 3Ω resistor (R2).
  • Step 2: Understand that when resistors are in series, their total impedance (Z) is the sum of their individual resistances.
  • Step 3: Write the formula for total impedance in series: Z = R1 + R2.
  • Step 4: Substitute the values of the resistors into the formula: Z = 4Ω + 3Ω.
  • Step 5: Perform the addition: 4Ω + 3Ω = 7Ω.
  • Step 6: Conclude that the equivalent impedance (Z) is 7Ω.
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