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1. Part of a single rectangular loop of wire with dimensions shown in the (Figure 1) is situated inside a region of uniform magnetic field of 0.410T . The total resistance of the loop is 0.260Ω. Calculate the force required to pull the loop from the field (to the right) at a constant velocity of 4.90m/s . Neglect gravity. F= ?

2. The magnetic field perpendicular to a single 13.2-cm -diameter circular loop of copper wire decreases uniformly from 0.670T to zero. If the wire is 2.75mm in diameter, how much charge moves past a point in the coil during this operation? The resistivity of copper is 1.6x10^-8Ωm .

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