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Q. A current of 29.0 mA is maintained in a single circular loop with a circumference of 3.20 m. A magnetic field of 0.320 T is directed parallel to the plane of the loop. What is the magnitude of the torque exerted by the magnetic field on the loop?

Q. A circuit contains six 290 lamps and a 18.0 heater connected in parallel. The voltage across the circuit is 120 V. If the circuit has a 11 A fuse, will the fuse melt if all the lamps and the heater are on?

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