In a circuit with a 9V battery and three resistors (3Ω, 3Ω, and 3Ω) in series, w

Practice Questions

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

Questions & Step-by-Step Solutions

In a circuit with a 9V battery and three resistors (3Ω, 3Ω, and 3Ω) in series, what is the voltage across each resistor?
Correct Answer: 3V
  • Step 1: Identify the total voltage in the circuit, which is given as 9V from the battery.
  • Step 2: Identify the number of resistors in the circuit, which are three 3Ω resistors.
  • Step 3: Understand that in a series circuit, the total voltage is divided equally among all the resistors.
  • Step 4: Calculate the total resistance by adding the resistance of each resistor: 3Ω + 3Ω + 3Ω = 9Ω.
  • Step 5: Since there are three resistors, divide the total voltage by the number of resistors: 9V / 3 = 3V.
  • Step 6: Conclude that the voltage across each 3Ω resistor is 3V.
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