Practice # 7 Capacitance, Inductance and Impedance

Front

What determines the rate of charging or discharging in a capacitor circuit?

Back

The time constant of the circuit.

Front

How many electrons are in one coulomb of charge?

Back

6.28 x 10^18 electrons.

Front

What effect do inductive reactance and capacitive reactance have in an AC circuit?

Back

They create a phase shift between the voltage and current.

Front

What is the definition of one farad?

Back

One farad is one coulomb of charge stored with one volt across the plates of the capacitor.

Front

What is the schematic symbol for a fixed capacitor?

Back

The symbol represents a fixed capacitor.

Front

What is capacitance?

Back

Capacitance is the ability of a system to store charge per unit voltage.

Front

What is the unit of inductance?

Back

The unit of inductance is the henry.

Front

What is impedance in an AC circuit?

Back

Impedance is the total opposition that a circuit offers to the flow of alternating current.

Front

What is the formula for calculating the time constant (τ) in an RC circuit?

Back

τ = R × C, where R is resistance and C is capacitance.

Front

What is the relationship between voltage, current, and impedance in an AC circuit?

Back

V = I × Z, where V is voltage, I is current, and Z is impedance.