11.2 Electric Circuits

    Cards (96)

    • What is an electric circuit defined as?
      Closed loop path
    • What is an example of an electrical device that consumes energy in a circuit?
      Light bulb
    • A voltage source in a basic circuit provides energy
    • A closed-loop circuit allows current to flow continuously.

      True
    • What is another term for voltage in an electric circuit?
      Potential difference
    • The unit of current is the ampere.

      True
    • The unit of resistance is the ohm
    • A voltage source provides energy to the circuit
    • The voltage source provides the energy needed to drive current through the circuit.
    • Voltage, also known as potential difference, is the force that drives electric current to flow.
    • The unit of current is the ampere
    • A voltage source in a circuit provides energy
    • A circuit must be closed to allow uninterrupted current flow.
      True
    • Copper wires are commonly used as conductive wires in circuits.

      True
    • An electrical device in a circuit can either consume or store energy
    • The unit of voltage is the volt
    • What is the measure of opposition to current flow in a circuit?
      Resistance
    • Higher resistance in a circuit results in less current flow under the same voltage.

      True
    • A closed loop is necessary for uninterrupted current flow in a circuit.
      True
    • Conductive wires in a basic electric circuit are typically made of copper
    • The unit of voltage is the volt
    • Match the aspect of current with its analogy in water flow:
      Definition ↔️ Rate of flow of water
      Unit ↔️ Liters per second
    • Higher resistance in a circuit results in less current flow under the same voltage.
      True
    • In a series circuit, components are connected in a single continuous path
    • How is total resistance calculated in a series circuit?
      Sum of individual resistances
    • What is the total resistance in a series circuit with resistors of 10Ω and 20Ω?
      30Ω
    • What is the voltage across a 20Ω resistor in the example circuit?
      20V
    • In a parallel circuit, each branch experiences the same voltage.

      True
    • In a parallel circuit, the voltage is the same across all branches
    • Match the component with its function in an electric circuit:
      Voltage Source ↔️ Provides energy to drive current
      Conductive Wires ↔️ Carry current from source to devices
      Electrical Devices ↔️ Use or store energy
    • What is voltage also called?
      Potential difference
    • What is resistance measured in?
      Ohms (Ω)
    • High resistance reduces current, while low resistance allows more current to flow under the same voltage.
    • Resistance is the measure of opposition to current flow in a circuit.
    • Match the property with its unit:
      Resistance ↔️ Ohm (Ω)
      Voltage ↔️ Volt (V)
      Current ↔️ Ampere (A)
    • If the voltage in a circuit is 12V and the resistance is 4Ω, the current is 3A.

      True
    • In a series circuit, the total resistance is the sum of individual resistances.
    • What happens to the total resistance when resistors are added in parallel?
      It decreases
    • What formula is used to calculate the total current in a combined circuit?
      Itotal=I_{total} =VsourceRtotal \frac{V_{source}}{R_{total}}
    • To combine resistors in parallel, the reciprocal of the total resistance is equal to the sum of the reciprocals of individual resistances