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