Alternating CurrentEasy
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.
More Alternating Current Questions
A current in circuit is given by i = 3 + 4 sin ωt. Then the effective value of current is :...If the input voltage of a transformer is 2500 volts and output current is 80 ampere. The ratio of number of turns in the...In an accelerator the electrons are accelerated up to an energy of 50 MeV. The electrons do not emerge continuously from...A bulb and a capacitor are connected in series to a source of alternating current. If its frequency is increased, while ...The self inductance of a choke coil is 10 mH. when it is connected with it is connected with a 10 V D. C. source. source...