2.The flexible loop in the figure below has a radius of 14.0 cm and is in a magn

Question

2.The flexible loop in the figure below has a radius of 14.0 cm and is in a magnetic field of magnitude 0.140 T. The loop is grasped at points A and B and stretched until its area is nearly zero. If it takes 0.160 s to close the loop, what is the magnitude of the average induced emf in it during this time interval?

____________mV

http://www.webassign.net/serpse8/31-p-003.gif

(a) What is the electric field induced at a radius r = 1.00 cm from the axis of the solenoid? (Use the following as necessary: t. Let E be measured in millivolts/meter and t be measured in seconds.)
E =  

Explanation / Answer

We know that the EMF is given by

V = B dA/dt

V = 0.14 * 3.14 * (.14 *.14)/.16

V = 53.85 mV

Please post seperate questions seperately

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