www.webassign net/web/student/Assignment-Responses/Mast?dep 16019112 a7 315 poin
ID: 1557518 • Letter: W
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www.webassign net/web/student/Assignment-Responses/Mast?dep 16019112 a7 315 points Previous Answers SerPSET9 31 P049. My Notes o Ask The rotating loop in an Ac generator is a square 14.0 cm on a side. It is rotated at 40.0 Hz in a uniform field of 0.800 T. Calculate the following quantities as functions of time t, where t is in (a) the flux through the loop 15.68 cos (471) mT.m? (b) the emf induced in the loop -3.94 sin (251.327t) x v (c) the current induced in the loop for a loop resistance of 1.50 n 2.6 sin(471) x A (d) the power delivered to the loop (e) the torque that must be exerted to rotate the loop Need Help? LRead Practice Another Version My Notes o Ask your Traoner Submit Answer 5/10 points 1 Previous Answers SerPSET9 31 P054 directed out of the page as in the figure below. A clockwise current A circular loop of wire of resistance R. 0.500 o and radius r 7 so cm is in a uniform magnetic field of I 2.30 mA is induced in the loop.Explanation / Answer
(A) A = 0.14^2 = 0.0196 m^2
w = 2pi f = 251.32 rad/s
B = 0.800 T
flux = B A sin(wt)
= (0.0196 x 0.8) sin(251.32 t )
= 0.01568 sin(251.32 t ) Wb
(B) emd = d(flux) / dt
= (0.01568 x 251.32) cos(251.32 t)
= 3.94 cos(251.32 t) Volt
(c) I = emf / R
= 3.94 cos(251.32 t ) / 1.50
= 2.63 cos(251.32 t) A
(D) P = I^2 r
= 10.35 cos^2 (251.32 t) W
(E) torque = u x B
= (0.14^2 x 2.63 cos(251.32 t) ) (0.800)
= 0.0412 cos(251.32 t) N m
= 41.2 cos(251.32 t) mN m
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