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n (Figure 1), the moving rod has a resistance of
0.25? and moves on rails 20.0?cm apart. The stationary U-shaped conductor has negligible resistance.
When a force of 0.470N is applied to the rod, it moves to the right at a constant speed of 1.60m/s.
What is the magnetic field?
B (outward)
v At
· ΔΑ

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