(8c30p1) The magnetic flux through the loop shown in the figure increases accord
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Question
(8c30p1) The magnetic flux through the loop shown in the figure increases according to the relation
?B = 3.0 t2+ 9.0 t
where ?B is in milliwebers and t is in seconds.
What is the flux at t = 4.0 s? (in webers = Wb)
What is the magnitude of the emf induced in the loop at t = 4.0 s?
What is the direction of the current, clockwise or counterclockwise?
The magnetic flux through the loop shown in the figure increases according to the relation ? B = 3.0 t2+ 9.0 t where ?B is in millimeters and t is in seconds.Explanation / Answer
flux=3*t^2+9t
a) so flux at t=4s = 3*4^2 +9*4= 84 Wb
b) emf= d(phi)/dt= 6t+9
at t=4s
emf= 6*4+9= 33 V
c) clockwise
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