Practice # 7 Capacitance, Inductance and Impedance

Front

What is the dielectric in a capacitor?

Back

The dielectric is the insulating material that separates the conductive plates in a capacitor, allowing it to store electrical energy.

Front

What is the schematic symbol for a fixed capacitor?

Back

The schematic symbol for a fixed capacitor typically consists of two parallel lines representing the plates, with a gap between them.

Front

How do you calculate the total capacitance of capacitors in parallel?

Back

The total capacitance is the sum of the individual capacitances: C_total = C1 + C2 + C3 + ...

Front

What happens to the effective plate separation when capacitors are connected in series?

Back

The effective plate separation is less than that of the smallest capacitor in the series.

Front

What is the schematic symbol for a variable capacitor?

Back

The schematic symbol for a variable capacitor usually includes a similar representation to a fixed capacitor but with an additional line or arrow indicating adjustability.

Front

Define capacitance.

Back

Capacitance is the ability of a system to store an electric charge, measured in farads (F).

Front

What is the formula for the capacitance of a parallel plate capacitor?

Back

C = (ε * A) / d, where C is capacitance, ε is the permittivity of the dielectric, A is the area of the plates, and d is the distance between the plates.

Front

What is the role of inductance in an electrical circuit?

Back

Inductance is the property of a conductor to oppose changes in current, storing energy in a magnetic field.

Front

How do you calculate the total inductance of inductors in series?

Back

The total inductance is the sum of the individual inductances: L_total = L1 + L2 + L3 + ...

Front

What is impedance in an AC circuit?

Back

Impedance is the total opposition that a circuit offers to the flow of alternating current, combining resistance and reactance.