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A 25 cm diameter tangent galvanometer consists of 15 turns of 0.5 mm diameter copper wire...

A 25 cm diameter tangent galvanometer consists of 15 turns of 0.5 mm diameter copper wire and has a current of 2 A running through it. Calculate the total internal resistance of the wire and the magnetic field at the center of the loop. (The resistivity of copper is p = 1.69 x 10-8 ohm meter).

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