Alternating CurrentHard
Question
In an AC generator, a coil with N turns, all of the same area A and total resistance R, rotates with frequency ω in a magnetic field B. The maximum value of emf generated in the coil is -
Options
A.NABRω
B.NAB
C.NABR
D.NABω
Solution
φ= NBA cosωt
∴ e = -
= NBAω sinωt ⇒ emax = NBAω
∴ e = -
= NBAω sinωt ⇒ emax = NBAωCreate a free account to view solution
View Solution FreeMore Alternating Current Questions
r.m.s. value of current i = 3 + 4 sin (ω t + π/3) is:...Energy loss in pure capacitance in A.C. circuit is...In an LCR circuit C = 25 μF, L = 0.1H, R = 25 Ω, if E = 310 sin 314 t volts is the generator voltage which is ...The value of current at half power points is :...In a AC circuit the voltage and current are describedBy V = 200 sinvoltsBy i = 50 sin mA repectively. The average power ...