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Physics
Physics
Problem
The instantaneous expressions for voltage and current in an A.C. circuit are
v
=
220
2
sin
(
314
t
)
v=220\sqrt{2}\,\sin(314 t)
v
=
220
2
sin
(
314
t
)
V and
i
=
10
2
sin
(
314
t
−
π
6
)
i=10\sqrt{2}\,\sin\bigl(314 t-\tfrac{\pi}{6}\bigr)
i
=
10
2
sin
(
314
t
−
6
π
)
A. Calculate the time by which the current lags behind the voltage.
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