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qUESTIONS

Example 12.6: Consider a uniformly wound solenoid having N turns and length 4. The core of the solenoid is air. Find the inductance of the solenoid of N = 200, l = 20 cm and cross-sectional area, A = 5 cm^2 Calculate the induced emf e_{L} if the current flowing through the solenoid decreases at a rate of 60 A/s.

Example 12.7: The self-inductance of a closely wound coil of 200 turns is 10 mH. Determine the value of magnetic flux through the cross-section of the coil when the current passing through the coil is 4 mA.

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