Reactance and Impedance (Capacitors)

X_C is the symbol for the

• Reactance of a capacitor

• Reactance of an inductor

• Impedance

• Resistance of a capacitor

Impedance is the

• total resistance in a circuit

• total resistance and reactance in a circuit

• the resistance in a circuit subtract the reactance in a circuit

Capacitors have a ​ (a)   reactance at​ (b)   frequencies as they are given time to ​ (c)   and gain voltage.

• high
• low
• charge
• discharge
• great

Mathematical Equivalence

ON

Label the following components in the vector diagram.

a

b

c

Capacitor Reactance (Xc)

Inductor Reactance

Resistance (R)

Impedance (Z)

Label the following components in the vector diagram.

a

b

c

Voltage of the inductor

Voltage across the resistor

Voltage of the capacitor

Supply Voltage

Label the following components in the vector diagram.

a

b

c

Voltage of the inductor (VL)

Voltage of the capacitor (Vc)

Supply Voltage (Vs)

Voltage across the resistor (VR)

A capacitor (reactance of 10 Ω) is in a circuit of resistance 10 Ω. Calculate the impedance of the circuit. Round to 3 s.f.

Mathematical Equivalence

ON

Label the following components in the vector diagram.

a

b

c

Resistance (R)

Capacitor Reactance (Xc)

Impedance (Z)

Inductor Reactance (XL)

Organize these circuit descriptors into the correct type of circuit

Groups:

(a) Capacitive

,

(b) Resonant

,

(c) Inductive

• Xc = XL

• Xc > XL

• Supply voltage lags the current

• Maximum Current

• Supply voltage is in phase with current

• Xc < XL

• Supply voltage leads the current

• Z is minimum