Задача 30197.

The number of turns in the solenoid, N = 800, the length L = 20 cm, and the cross-section S = 4 cm ^ 2. At what rate of current change in the solenoid without core induced maximal self-induction EMF equal to 0,4V.

Detailed solution with a short recording conditions, laws and formulas used in the decision, the withdrawal of the calculation formula and the answer.
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