Two insulated wires are wound on the same hollow cylinder so as to form two solenoids sharing a common air-filled core. Let l be the length of the core
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Two insulated wires are wound on the same hollow cylinder so as to form two solenoids sharing a common air-filled core. Let l be the length of the core, A the cross -sectional area of the core, N1 the number of times the first wire is wound around the core, and N2 the number of [...]