A copper wire is 800 m long and has a cross-sectional area, Ask an Expert

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A copper wire is 8.00 m long, and has a cross-sectional area of1.0X10-4 m2. This wire forms a one turn loopin the shape of a square and is then connected to a battery thatapplies a potential difference of 0.100 V. The loop is placed in auniform magnetic field of magnitude 0.400 T, so that the plane ofthe coil makes an angle 25 degrees with the direction of themagnetic field

(a) What is the torque acting on the loop?

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