Electrical Power vs
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Questions and Answers

Which of the following statements correctly differentiates electrical power and electrical energy?

  • Electrical power is the rate at which electrical energy is used, while electrical energy is the total amount of work done by the power over time. (correct)
  • Electrical power is the total amount of work done by electricity, while electrical energy is the rate at which electricity is used.
  • Electrical power and electrical energy are essentially the same and can be used interchangeably in most contexts.
  • Electrical power is the ability of electricity to do work, while electrical energy is the measure of voltage and current in a circuit.
  • What is the relationship between electrical power and electrical energy?

  • Electrical power and electrical energy have a linear relationship, with power being directly proportional to energy.
  • Electrical power is the derivative of electrical energy with respect to time.
  • Electrical energy is the integral of electrical power with respect to time. (correct)
  • Electrical power and electrical energy are independent of each other in electrical systems.
  • In an electrical circuit, what happens to the electrical power if the voltage is doubled and the current is halved?

  • The electrical power is doubled.
  • The electrical power remains the same. (correct)
  • The electrical power is halved.
  • The electrical power is quadrupled.
  • What is the primary function of a circuit breaker in a household electrical system?

    <p>To protect the circuit from overloading and short circuits</p> Signup and view all the answers

    What is the purpose of fuses in a household electrical system?

    <p>To interrupt the flow of electricity when there is an overload or short circuit</p> Signup and view all the answers

    What happens when there is an overload in an electrical circuit protected by a circuit breaker or a fuse?

    <p>The circuit breaker or fuse interrupts the flow of electricity</p> Signup and view all the answers

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