In a circuit with a 10V battery and two resistors in series (2Ω and 3Ω), what is

Practice Questions

Q1
In a circuit with a 10V battery and two resistors in series (2Ω and 3Ω), what is the voltage drop across the 3Ω resistor?
  1. 4V
  2. 6V
  3. 8V
  4. 10V

Questions & Step-by-Step Solutions

In a circuit with a 10V battery and two resistors in series (2Ω and 3Ω), what is the voltage drop across the 3Ω resistor?
  • Step 1: Identify the total voltage in the circuit, which is given as 10V from the battery.
  • Step 2: Identify the resistors in the circuit. We have R2 = 2Ω and R3 = 3Ω.
  • Step 3: Calculate the total resistance in the circuit by adding the two resistors together: Total Resistance = R2 + R3 = 2Ω + 3Ω = 5Ω.
  • Step 4: Use the voltage divider rule to find the voltage drop across the 3Ω resistor. The formula is V3 = (R3 / (R2 + R3)) * Vtotal.
  • Step 5: Substitute the values into the formula: V3 = (3 / (2 + 3)) * 10.
  • Step 6: Simplify the equation: V3 = (3 / 5) * 10.
  • Step 7: Calculate the result: V3 = 6V.
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