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Connect a battery to a solenoid A cylindrical solenoid 38 cm long with a radius of...

Connect a battery to a solenoid
A cylindrical solenoid 38 cm long with a radius of 6 mm has 275 tightly-wound turns of wire uniformly distributed along its length (see the figure). Around the middle of the solenoid is a two-turn rectangular loop 3 cm by 2 cm made of resistive wire having a resistance of 135 ohms. One microsecond after connecting the loose wire to the battery to form a series circuit with the battery and a 20  resistor, what is the magnitude of the current in the rectangular loop and its direction (clockwise or counter-clockwise in the diagram)? (The battery has an emf of 9 V.)

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