A circuit has a 9V battery and a 3Ω resistor. What is the voltage drop across th

Practice Questions

Q1
A circuit has a 9V battery and a 3Ω resistor. What is the voltage drop across the resistor? (2022)
  1. 3V
  2. 6V
  3. 9V
  4. 12V

Questions & Step-by-Step Solutions

A circuit has a 9V battery and a 3Ω resistor. What is the voltage drop across the resistor? (2022)
  • Step 1: Identify the components in the circuit. We have a 9V battery and a 3Ω resistor.
  • Step 2: Understand that in a simple circuit with a single resistor, the voltage drop across the resistor is equal to the voltage of the battery.
  • Step 3: Since the battery provides 9V, the voltage drop across the 3Ω resistor is also 9V.
  • Ohm's Law – Understanding the relationship between voltage, current, and resistance in a circuit.
  • Series Circuit Basics – In a simple series circuit, the voltage drop across components is equal to the source voltage.
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