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Историческую версию Electronics Calculator Pro можно получить на Android
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This application is basicaly made for students. It contains a lots of formulas for calculating current, voltage, resistance, capacity, inductance, and all of unknown fields that you leave empty. It also contains explanations of:
Ohm law, Capacitive reactance, Inductive reactance, Conductance, Inductance, RC time constant and RL time constant.
Resistance: Ohm law, Capacitive reactance, Inductive reactance, Conductance, 4 ring resistor color code
Capacity: C = Q / V, C = Ԑo * Ԑr * (A / d), RC time constant
Inductance: L = (µ * A * N2) / I, L = Φ / I, RL time constant