A 540 105 h solenoid is constructed by wrapping 65 turns, Ask an Expert

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A 5.40 105 H solenoid is constructed by wrapping 65 turns of wire around a cylinder with a cross-sectional area of 9.0 104 m2. When the solenoid is shortened by squeezing the turns closer together, the inductance increases to 8.60 105 H. Determine the change in the length of the solenoid.

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