In a model AC generator, a 500 turnrectangular coil 15.0 cm by 30 cm rotates at
ID: 1739877 • Letter: I
Question
In a model AC generator, a 500 turnrectangular coil 15.0 cm by 30 cm rotates at 125 rev/minin a uniform magnetic field of 0.63 T. (a) What is the maximum emf induced in thecoil?1 V
(b) What is the instantaneous value of the emf in the coil att = (/38) s? Assumethat the emf is zero at t = 0.
2 V
(c) What is the smallest value of t for which the emf willhave its maximum value?
3 s (a) What is the maximum emf induced in thecoil?
1 V
(b) What is the instantaneous value of the emf in the coil att = (/38) s? Assumethat the emf is zero at t = 0.
2 V
(c) What is the smallest value of t for which the emf willhave its maximum value?
3 s
Explanation / Answer
Given No of turns N = 500 area of the rectangular coil A =15*30cm2 = 450cm2 = 450*10-4m2 angular frequency = 125rev/min = 125*2/60 rad/s magnetic field B = 0.63 T a) The maximum emf is max = NBA = --------------- b) at t = (/38) sthe instantaneous value of the emf in the coil is =maxsint =---------------- c) = NBAsint is maximum when sint = 1 or sint = sin/2 or t = /2 so t =/2 =--------------- angular frequency = 125rev/min = 125*2/60 rad/s magnetic field B = 0.63 T a) The maximum emf is max = NBA = --------------- b) at t = (/38) sthe instantaneous value of the emf in the coil is =maxsint =---------------- c) = NBAsint is maximum when sint = 1 or sint = sin/2 or t = /2 so t =/2 =---------------Related Questions
Hire Me For All Your Tutoring Needs
Integrity-first tutoring: clear explanations, guidance, and feedback.
Drop an Email at
drjack9650@gmail.com
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.