Formulas and methods for solving applied problems

• Calculation of the average value of the current when charging a capacitor
• Energy of the phase shift of the current in the inductor
• The electrical capacity of the connection. The method of calculation
• The potential of a charged sphere. The method of calculation
• Values of certain functions
• Approximation formulas for potential difference
• Calculation secluded capacitance unevenly charged sphere
• Sum of squares and sum square in electrodynamics
• Some of the amounts of rows with squares of integrals
• Integral with sine in degrees and the cosine module

Numerical solution of differential equations

• Simple methods of numerical solution of some differential equations
• Method of numerical solution of differential equations of the second order
• Table of algorithms for the numerical solutions of some differential equations

Transients in RLC circuits

• Analytical equation for current and energy in a coil according to the Stoletov curve
• Inductance as an energy storager
• Connecting a series resonant circuit to a DC voltage source
• Changing the voltage of the power supply in the circuit, the initial values of the current in the inductor and the voltage in the capacitance

Other notes

• A series with random signs and its sum
• Two Rockets Paradox
• Yin-Yang in 3D