Cards (65)

    • What are common types of capacitors?
      Parallel-plate, cylindrical, spherical
    • What are the connections to the conductive plates of a capacitor called?
      Terminals
    • The dielectric in a capacitor prevents charges from recombining.
      True
    • Increasing the plate area of a capacitor increases
    • What is the formula for the capacitance of a parallel-plate capacitor?
      C = \frac{\epsilon_{0} \epsilon_{r} A}{d}</latex>
    • The formula for parallel-plate capacitor capacitance is C=C =ϵ0ϵrAd \frac{\epsilon_{0} \epsilon_{r} A}{d}
    • The permittivity of free space is denoted by ϵ0\epsilon_{0}
    • Common types of capacitors include parallel-plate, cylindrical, and spherical
    • The capacitance of a parallel-plate capacitor is given by the formula C=C =ϵ0ϵrAd \frac{\epsilon_{0} \epsilon_{r} A}{d}
    • What are the units of relative permittivity?
      Dimensionless
    • During the discharging process, the voltage across a capacitor decreases exponentially.

      True
    • Match the parameter with its formula:
      Time Constant ↔️ τ=\tau =RC RC
      Charging Voltage ↔️ V(t)=V(t) =V0(1et/τ) V_{0}(1 - e^{ - t / \tau})
      Discharging Current ↔️ I(t)=I(t) =I0et/τ - I_{0} e^{ - t / \tau}
    • Capacitance depends on plate area, plate separation, and dielectric properties.
    • Increasing the plate area of a capacitor increases its capacitance.
    • The permittivity of free space is approximately 8.854
    • Higher capacitance allows more charge to be stored for a given voltage.

      True
    • Capacitance decreases with greater plate separation.
      True
    • The time constant for discharging a capacitor is calculated as τ = RC.
      True
    • Increasing the voltage across a capacitor significantly amplifies the stored energy.

      True
    • What is the definition of a capacitor?
      Stores electric charge
    • The structure of a capacitor includes two conductive plates separated by an insulating material called a dielectric.
      True
    • How do capacitors store electrical energy?
      By separating charges
    • Match the capacitor component with its description:
      Conductive Plates ↔️ Metal plates that accumulate charge
      Dielectric ↔️ Insulating material between plates
      Terminals ↔️ Connections to conductive plates
    • Decreasing the plate separation of a capacitor increases
    • In the capacitance formula, CC represents the capacitance in units of Farads
    • Match the variable in the capacitance formula with its unit:
      C ↔️ Farads
      A ↔️ m^2
      d ↔️ m
    • Higher capacitance allows more charge to be stored for a given voltage
    • What is the value of the permittivity of free space in Farads per meter (F/m)?
      8.854×10128.854 \times 10^{ - 12}
    • What is the primary function of a capacitor?
      Store electrical charge
    • What insulating material is used between the conductive plates of a capacitor?
      Dielectric
    • Increasing the plate area or using a material with a higher dielectric constant increases capacitance.

      True
    • The permittivity of free space is given by 8.854 x 10^-12 F/m.
    • The separation between the plates of a capacitor is measured in meters.
    • What is the formula for the time constant of a capacitor in an RC circuit?
      τ=\tau =RC RC
    • Capacitors store electrical charge using two conductive plates separated by a dielectric material.

      True
    • Higher capacitance means a capacitor can store more charge at a given voltage.

      True
    • List the factors affecting capacitance in order of their effect.
      1️⃣ Plate Area
      2️⃣ Plate Separation
      3️⃣ Dielectric Properties
    • Higher capacitance allows more charge to be stored for a given voltage.

      True
    • Match the variable with its unit:
      Capacitance ↔️ Farads
      Permittivity of Free Space ↔️ F/m
      Plate Area ↔️ m^2
      Plate Separation ↔️ m
    • In a real-world scenario, the relative permittivity of a capacitor is 4, and its capacitance is nanofarads
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