10.c.
Inductive reactance (XL) the opposition a. The inductance and capacitance a. causes the current the cir-
cuit lag behind the applied voltage. circuit also cause an
opposition current flow, which call reactance.2
Voltage and current relationships resistive, capacitive and inductive circuits.c. causes the current the circuit lag behind the applied voltage,
as shown Fig. circuit, resistance only part the opposition cur-
rent flow. current inductive
circuit. current inductive
circuit.142 constant
f the frequency the supply
L the inductance the circuit by
X
V
I
L
L
L
R
Pure resistance
(R)
V and phase lags 90° leads 90°
Pure inductance
(L)
Pure capacitance
(C)
V
V
I
V V
I
I
I
I
L
V
I C
V
I
V V
I I
FIGURE 10.2. From
Ohm’s law:
R
V
I
R
R
( )
Ω
Definition
In any circuit, resistance defined as
opposition current flow.
.
However, a. given the formula:
X fL
L Ω
where
π 3.
Definition
Inductive reactance (XL) the opposi-
tion a.c.c.Alternating current theory and electrical machines
195
Resistance
In any circuit, resistance defined opposition current flow
