Alternating CurrentHard
Question
The resistance that must be connected in series with inductance of 0.2 H in order that the phase difference between current and e.m.f. may be 45o when the frequency is 50 Hz, is:-
Options
A.6.28 ohm.
B.62.8 ohm.
C.628 ohm.
D.31.4 ohm.
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