5.3 Circuits

    Cards (93)

    • What are the three fundamental electrical quantities?
      Current, potential difference, resistance
    • Potential difference is measured in volts.

      True
    • What is the formula for Ohm's Law?
      V=V =IR IR
    • What are the three key electrical quantities?
      Current, potential difference, resistance
    • Ohm's Law states that potential difference is directly proportional to current
    • Electrical power is measured in watts.

      True
    • What is the same through all elements in a series circuit?
      Current
    • In a series circuit with resistors of 10 Ω and 20 Ω connected to a 12V supply, the current is 0.4 A
    • The total resistance in a parallel circuit is always less than the smallest individual resistance.

      True
    • Arrange the steps to calculate current in a series circuit:
      1️⃣ Calculate the total resistance
      2️⃣ Use Ohm's Law to find the current
      3️⃣ Substitute the values into the formula
    • The total resistance in a series circuit is the sum of individual resistances
    • What happens to the current in a parallel circuit?
      Current divides among branches
    • The potential difference is the same across all components in a parallel circuit.

      True
    • Match the electrical quantity with its unit:
      Current ↔️ Ampere
      Potential Difference ↔️ Volt
      Resistance ↔️ Ohm
    • Electrical power is calculated using the formula P = VI
    • The total resistance in a series circuit is less than the smallest individual resistance.
      False
    • The potential difference is distributed across components in a parallel circuit.
      False
    • In a parallel circuit, the resistance is less than the smallest individual resistance because current flows through multiple paths
    • The total resistance in a parallel circuit is less than the smallest individual resistance.

      True
    • What is the current through a 20 Ω resistor in a parallel circuit connected to a 12 V supply?
      0.6 A
    • In a parallel circuit, the potential difference is the same across all components.
      True
    • What is the current through a 10 Ω resistor in a parallel circuit connected to a 12 V supply?
      1.2 A
    • The total current in a parallel circuit is the sum of the currents through each branch.

      True
    • How are series resistors combined to calculate equivalent resistance?
      By adding their resistances
    • The equivalent resistance of two 20 Ω resistors in parallel is 10 Ω.

      True
    • In a combination circuit, if R₃ = 30 Ω and R₂ = 20 Ω, what fraction of the total current flows through R₃?
      20/50
    • What is the total resistance of two resistors in series with values 10 Ω and 20 Ω?
      30 Ω
    • In a series circuit, the current is the same throughout the circuit.

      True
    • What is the formula for calculating total resistance in a series circuit?
      R_total = R₁ + R₂ + ... + Rₙ
    • In a parallel circuit, the total resistance is always less than the smallest individual resistance
    • What is the formula for calculating total resistance in a parallel circuit?
      1/R_total = 1/R₁ + 1/R₂ + ... + 1/Rₙ
    • The formula for calculating total resistance in a series circuit is R_total = R₁ + R₂ + ... + Rₙ
      True
    • In parallel circuits, the total resistance is less than the smallest individual resistance
    • What is the total resistance of two resistors in parallel with R₁ = 10 Ω and R₂ = 20 Ω?
      6.67 Ω
    • What are the three key electrical quantities?
      Current, voltage, resistance
    • Match the electrical quantity with its unit:
      Current ↔️ Ampere
      Potential Difference ↔️ Volt
      Resistance ↔️ Ohm
    • What does Ohm's Law state?
      V = IR
    • Electrical power is calculated using the formula P = VI
    • In a series circuit, the current is the same through all elements.

      True
    • In a parallel circuit, the potential difference is the same across all components.

      True
    See similar decks