ElectroMagnetic InductionMedium
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 ElectroMagnetic Induction Questions
A long wire is in north-south direction, it is dropped freely towards earth, then no potential difference is induced bet...The armature of D.C. motor has 20Ω resistance it draws current of 1.5 ampere when run by 220 volts D.C. supply. The...A wire of fixed length is wound on a solenoid of length ′l′ and radius ′r′. Its self inductance ...D.C. motor run by 120V. If armature current at eb = 115V is 10 A. then find out current just after motor is started :-...A metallic square loop ABCD is moving in its own plane with velocity v in unifgorm magnetic field perpendicular to its p...