Energy of an electrostatic flat capacitor W = 10 mJ. If the charge of the capacitor is q = 50 μC, then its electrical capacity C is …

Initial data: W (energy of an electrostatic flat capacitor) = 10 mJ (10 * 10 ^ -3 J); q (charge of the taken flat capacitor) = 50 μC (50 * 10 ^ -6 C).

The electrical capacity of the taken electrostatic flat capacitor is determined by the formula: W = q2 / 2C, whence C = q2 / 2W.

Calculation: C = (50 * 10 ^ -6) 2 / (2 * 10 * 10 ^ -3) = 125 * 10 ^ -9 Ф (125 nF).

Answer: The electrical capacity of the electrostatic flat capacitor taken is 125 nF.



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