In a series circuit with a 9V battery and two resistors (3Ω and 6Ω), what is the

Practice Questions

Q1
In a series circuit with a 9V battery and two resistors (3Ω and 6Ω), what is the voltage across the 6Ω resistor?
  1. 6V
  2. 3V
  3. 9V
  4. 4.5V

Questions & Step-by-Step Solutions

In a series circuit with a 9V battery and two resistors (3Ω and 6Ω), what is the voltage across the 6Ω resistor?
  • Step 1: Identify the total voltage from the battery, which is 9V.
  • Step 2: Identify the resistors in the circuit. We have R1 = 3Ω and R2 = 6Ω.
  • Step 3: Calculate the total resistance in the circuit by adding the two resistors: R_total = R1 + R2 = 3Ω + 6Ω = 9Ω.
  • Step 4: Use the voltage division formula to find the voltage across the 6Ω resistor: V = V_total * (R2 / R_total).
  • Step 5: Substitute the values into the formula: V = 9V * (6Ω / 9Ω).
  • Step 6: Simplify the calculation: V = 9V * (2/3) = 6V.
  • Step 7: Conclude that the voltage across the 6Ω resistor is 6V.
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