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A magnetic field passes through a stationary wire loop, and its magnitude changes in time according...

A magnetic field passes through a stationary wire loop, and its magnitude changes in time according to the graph in the drawing. The direction of the field remains constant, however. There are three equal time intervals indicated in the graph: 0

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Answer #1

The induced emf is given by e =NBAW

For a time period of 3 s induced emf is given by

                                             e=(51)(0.40)(0.26)(2pi/3) =11.10V

For a time period of 6s induced emf is given by

                                             e=(51)(0.40)(0.26)(2pi/6) =5.55V

For a time period of 9s induced emf is given by

                                             e=(51)(0.20)(0.26)(2pi/9) =1.85V

If the wire has 50ohms resistance then cuurent is given by

V =IR then i =V/R

Then at 3s is i =11.10/50 =0.23A

             9s is i=1.85/50 =0.037A

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