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　　Electric Fields and Forces Formulas

　　Coulomb's Law: F = k·q1·q1/r2

　　Electric field of a charge q: E = k·q/r2

　　Work done by electric field: W = q·E·d

　　Electric field between two metallic plates: E = V/d

　　DC Circuits Formulas

　　Ohm's Law: V = I·R

　　Power dissipated in a resistor: P = I·V = V2/R = R·I2

　　Resistance: R = ρ·l/A

　　Equivalent resistance of series resistors: Rs = R1 + R2 +...

　　Equivalent resistance of parallel resistors: 1/Rp = 1/R1 + 1/R2 +...

　　Equivalent capacitance of series capacitors: 1/Cs = 1/C1 + 1/C2 +...

　　Equivalent capacitance of parallel capacitors: Cp = C1 + C2 +...

　　Magnetic Fields and Forces Formulas

　　Magnetic force on a moving charge: F = q(v x B) = q·v·B·sin(θ)

　　Magnetic force on a current carrying wire: F = I·l·B·sin(θ)

　　Magnetic field created by a current: B = (μo/2π)·(I/r)

　　Faraday's Law: E = -dΦ/dt

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