A long straight wire carries a current.
A metal bar with length L is moving with constant velocity V as shown in the figure. Point A is at a distance Y1 from the bar.
1. Calculate the EMF induced in the bar (set up the integral).
2. Calculate the value of the induced EMF in the bar if the length of the bar is Z meters, current I = 20 amps, and distance Y1 = 3 meters.
3. Which point, A or B, is at a higher potential?
4. If the bar is replaced by a rectangular wire loop of resistance R ohms, what is the magnitude of the current induced?