Practice # 7 Capacitance, Inductance and Impedance

Front

What is the term for the difference in phase between voltage and current in an AC circuit due to inductive and capacitive reactance?

Back

Phase shift

Front

What determines the rate at which a capacitor charges or discharges through a resistance?

Back

Time constant

Front

When capacitors are connected in parallel, how is the total capacitance calculated?

Back

The sum of the individual capacitances

Front

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

Back

It is less than that of the smallest capacitor.

Front

What is the measure of a capacitor's ability to store charge called?

Back

Capacitance

Front

What is the formula for calculating the total capacitance of capacitors in series?

Back

1/C_total = 1/C1 + 1/C2 + ... + 1/Cn

Front

What is the unit of capacitance?

Back

Farad (F)

Front

What is the relationship between inductance and inductive reactance in an AC circuit?

Back

Inductive reactance (X_L) = 2πfL, where f is frequency and L is inductance.

Front

What is the formula for calculating the inductive reactance of a coil?

Back

X_L = 2πfL

Front

What is the effect of frequency on capacitive reactance?

Back

Capacitive reactance (X_C) decreases with increasing frequency.