A closed, square loop is formed with 40 cm of wire having R = 0.10 , as

A closed, square loop is formed with 40 cm of wire having R = 0.10 Ω, as shown in Figure CP 33.81. A 0.50 T magnetic field is perpendicular to the loop. At t = 0 s, two diagonally opposite corners of the loop begin to move apart at 0.293 m/s.

a. How long does it take the loop to collapse to a straight line?

b. Find an expression for the induced current I as a function of time while the loop is collapsing. Assume that the sides remain straight lines during the collapse.

c. Evaluate I at four or five times during the collapse, then draw a graph of I versus t.

Transcribed Image Text:

0.293 m/s 0.293 m/s