In Fig. 30-26, a wire loop has been bent so that it has
Chapter , Problem 6(choose chapter or problem)
In Fig. 30-26, a wire loop has been bent so that it has three segments: segment be (a quarter-circle), ae (a square corner), and ab (straight). Here are three choices for a magnetic field through the loop: (1) 81 = 3i + 7] - 5tk, (2) 82 = 5,i - 4] - 15k, (3) 83 = 2i - 5t] - 12k, where if is in milliteslas and , is in seconds. Without written calculation, rank the choices according to (a) the work done per unit charge in setting up the induced current and (b) that induced current, greatest first. ( c) For each choice, what is the direction of the induced current in the figure?
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