In a circuit with a 9V battery and two resistors in series (R1 = 3Ω, R2 = 6Ω), w

Practice Questions

Q1
In a circuit with a 9V battery and two resistors in series (R1 = 3Ω, R2 = 6Ω), what is the voltage across R2?
  1. 6V
  2. 3V
  3. 9V
  4. 0V

Questions & Step-by-Step Solutions

In a circuit with a 9V battery and two resistors in series (R1 = 3Ω, R2 = 6Ω), what is the voltage across R2?
  • Step 1: Identify the total voltage from the battery, which is 9V.
  • Step 2: Identify the values of the resistors: R1 = 3Ω and R2 = 6Ω.
  • Step 3: Calculate the total resistance in the circuit by adding R1 and R2: Total Resistance = R1 + R2 = 3Ω + 6Ω = 9Ω.
  • Step 4: Use the voltage division formula to find the voltage across R2: V_R2 = (R2 / Total Resistance) * V_total.
  • Step 5: Substitute the values into the formula: V_R2 = (6Ω / 9Ω) * 9V.
  • Step 6: Simplify the calculation: V_R2 = (6 / 9) * 9V = 6V.
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