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Old Jan 8th 2011, 12:08 PM   #1
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Join Date: Jan 2011
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guys .. need help plz

i need to solve this question ..its long one but i think its not pretty hard
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after studying the diagram
1) a)Find the forces per unit length on two long, straight and parallel conductors, if each carries a current of 10.0 A in the same direction and the separation distance is 0.20 m.
b)Find the maximum torque on an 85-turn, rectangular coil, 0.2 m by 0.3 m, carrying a current of 2.0 A in a field B =6.5 T.

c)Find the inductance of an ideal solenoid with 300 turns, length 0.5m, and a circular cross section of radius 0.02m.
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