Understanding Voltage in Electric Circuits
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Questions and Answers

What is voltage a measure of?

  • Electrical potential energy per unit area
  • Electrical resistance per unit length
  • Electrical current per unit time
  • Electrical potential energy per unit charge (correct)

    • What is the direction of electric charge movement in a circuit?

  • From points of higher voltage to points of lower voltage (correct)
  • In a circular motion around the circuit
  • From points of lower voltage to points of higher voltage
  • In a random and unpredictable pattern

    • How is voltage generated in a battery?

  • Through the flow of electric current
  • Through the resistance of the conductor
  • Through mechanical energy from rotating coils
  • Through chemical reactions inside the cells (correct)

    • What is the mathematical expression of Ohm's Law?

    <p>V = IR</p> Signup and view all the answers

    What is the importance of understanding the relationship between voltage, current, and resistance?

    <p>For designing and analyzing electrical circuits</p> Signup and view all the answers

    What is the effect of increasing the voltage in a circuit with a constant resistance?

    <p>It increases the current flowing through the circuit.</p> Signup and view all the answers

    What is the formula to calculate power in electrical systems?

    <p>P = VI</p> Signup and view all the answers

    What is the term for the decrease in voltage along a conductor due to its resistance?

    <p>Voltage drop</p> Signup and view all the answers

    In which type of circuit does the voltage remain constant over time?

    <p>Direct current (DC) circuit</p> Signup and view all the answers

    What is the result of high resistance in long wires or circuits?

    <p>Voltage drop</p> Signup and view all the answers

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