B) What is the magnetic flux through the loop after it is stretched? C) What is
ID: 1322118 • Letter: B
Question
B) What is the magnetic flux through the loop after it is stretched?
C) What is the magnitude of the average induced electromotive force ? in the loop during the stretching process?
A) A flexible loop has a radius of 16.9 cm and it is in a magnetic field of B = 0.179 T. The loop is grasped at points A and B and stretched until its area is zero. It takes 0.156 s to close the loop. What is the magnetic flux ?B through the loop before it is streched? B) What is the magnetic flux through the loop after it is stretched? C) What is the magnitude of the average induced electromotive force ? in the loop during the stretching process?Explanation / Answer
A)
A = pi*r^2
A = pi*.169^2
A = 0.0897 m^2
B = 0.179 T
Before streching
Flux = BA
FLux = 0.179*0.0897
Flux = 0.0161 Wb
the flux is 0.0161 Wb
B)
As the area is Zero
FLux = 0
c)
EMF = change in Flux / time
EMF = 0.0161 - 0 / .156
EMF = 0.103 V
the induced EMF is 0.103 V
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