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Problem
Problem
An alternating voltage is applied across the
R
−
L
R-L
R
−
L
combination.
V
=
220
sin
120
t
V = 220 \sin 120t
V
=
220
sin
120
t
and the current
I
=
4
sin
(
120
t
−
60
∘
)
I = 4 \sin (120t - 60^\circ)
I
=
4
sin
(
120
t
−
6
0
∘
)
develops. The power consumption is (a) zero (b) 100 W (c) 220 W (d) 440 W
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