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In a circuit with a 9V battery and a 3Ω resistor, what is the power dissipated by the resistor? (2021)

Practice Questions

1 question
Q1
In a circuit with a 9V battery and a 3Ω resistor, what is the power dissipated by the resistor? (2021)
  1. 3W
  2. 9W
  3. 6W
  4. 12W

Questions & Step-by-step Solutions

1 item
Q
Q: In a circuit with a 9V battery and a 3Ω resistor, what is the power dissipated by the resistor? (2021)
Solution: Power is given by P = V²/R = (9V)² / 3Ω = 81V² / 3Ω = 27W.
Steps: 0

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