Gr 10 Physical Sciences Ch 13: Parallel resistors
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Questions and Answers

What is a key characteristic of parallel circuits?

  • Total current is zero
  • Multiple paths for current (correct)
  • Different voltage across each resistor
  • Increased total resistance

    • What is the voltage across each resistor in a parallel circuit?

  • Zero voltage
  • The same as the voltage across the battery (correct)
  • Dependent on the resistance of each resistor
  • Half of the total voltage

    • What happens to the total resistance in a parallel circuit?

  • It increases with the addition of more resistors
  • It decreases with the addition of more resistors (correct)
  • It becomes infinite
  • It remains the same

    • How does the current behave in a parallel circuit?

    <p>It splits among the different paths</p> Signup and view all the answers

    What is the formula for calculating the total resistance in a parallel circuit?

    <p>1/Rp = 1/R1 + 1/R2 + ... + 1/Rn</p> Signup and view all the answers

    What is the total current in a parallel circuit?

    <p>The sum of the currents through each parallel branch</p> Signup and view all the answers

    Why do parallel circuits have multiple paths for current?

    <p>To provide multiple paths for current to flow</p> Signup and view all the answers

    What is the relationship between the voltage across each resistor and the voltage across the battery in a parallel circuit?

    <p>The voltage across each resistor is the same as the battery voltage</p> Signup and view all the answers

    What determines the portion of the total current that each path carries in a parallel circuit?

    <p>The resistance of each path</p> Signup and view all the answers

    In a parallel circuit, what is the relationship between the total current and the currents through each branch?

    <p>The total current is the sum of the currents through each branch</p> Signup and view all the answers

    What is the advantage of having multiple paths for current in a parallel circuit?

    <p>It allows the current to split across the different paths</p> Signup and view all the answers

    What is the consequence of connecting resistors in parallel on the total resistance?

    <p>The total resistance decreases</p> Signup and view all the answers

    What is the voltage across each resistor in a parallel circuit with three resistors connected to a battery with voltage V?

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

    What is the reason why the voltage across each resistor is the same in a parallel circuit?

    <p>The start and end points for all the resistors are the same</p> Signup and view all the answers

    What happens to the current through each resistor when more resistors are added in parallel?

    <p>The current through each resistor decreases</p> Signup and view all the answers

    Why is the total resistance in a parallel circuit less than the resistance of the smallest individual resistor?

    <p>Because the current is divided among the resistors</p> Signup and view all the answers

    What is the main reason why the total current in a parallel circuit splits across different paths?

    <p>Because there are multiple paths for current to flow</p> Signup and view all the answers

    What is the relationship between the total current and the currents through each branch in a parallel circuit?

    <p>The total current is the sum of the currents through each branch</p> Signup and view all the answers

    What happens to the total resistance when more resistors are added in parallel?

    <p>The total resistance decreases</p> Signup and view all the answers

    What is the significance of the voltage being the same across each resistor in a parallel circuit?

    <p>It allows the resistors to have different values of resistance</p> Signup and view all the answers

    What determines the portion of the total current that each path carries in a parallel circuit?

    <p>The resistance of each resistor</p> Signup and view all the answers

    What is the consequence of having multiple paths for current in a parallel circuit?

    <p>The total current is divided among the paths</p> Signup and view all the answers

    Why is the total resistance in a parallel circuit less than the resistance of the smallest individual resistor?

    <p>Because the reciprocal of the total resistance is the sum of the reciprocals of the individual resistances</p> Signup and view all the answers

    What is the advantage of connecting resistors in parallel?

    <p>It allows for more flexible circuit design</p> Signup and view all the answers

    What is the primary reason why the total current in a parallel circuit is divided among the different paths?

    <p>Because each path has a different resistance</p> Signup and view all the answers

    What is the relationship between the total current and the currents through each branch in a parallel circuit when the resistors are identical?

    <p>The total current is equal to the sum of the currents through each branch</p> Signup and view all the answers

    What happens to the total resistance when the number of resistors in a parallel circuit is increased?

    <p>It decreases in proportion to the number of resistors</p> Signup and view all the answers

    What is the condition necessary for the voltage across each resistor to be the same in a parallel circuit?

    <p>The start and end points of all the resistors must be the same</p> Signup and view all the answers

    What is the effect of increasing the voltage supplied by the battery on the total current in a parallel circuit?

    <p>The total current increases proportionally to the voltage</p> Signup and view all the answers

    What is the relationship between the resistance of each resistor and the total resistance in a parallel circuit?

    <p>The total resistance is less than the resistance of the smallest individual resistor</p> Signup and view all the answers

    What is the advantage of connecting resistors in parallel in terms of current?

    <p>The total current is increased</p> Signup and view all the answers

    What is the formula for calculating the total resistance in a parallel circuit?

    <p>1/R_P = 1/R_1 + 1/R_2 + ... + 1/R_n</p> Signup and view all the answers

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