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The illustration shows a loop of length l 2 meters and width 0.5 meters is moving with a velocity u along the y axis. A voltage across the length or terminals 1 to 2 is labeled, V sub start expression 1 2 end expression with polarity positive to negative. A resistor R is placed across the terminals 2 and 3. The voltage across the length or terminals 4 to 3 is labeled, V sub start expression 4 3 end expression with polarity positive to negative. The terminals 1 and 2 are at a distance of y sub 1 equals 2 meters, whereas the terminals 3 and 4 at a distance of y sub 2 equals 2.5.