ENGINEERING FORMULA

	ELECTRICAL ENGINEERING
	DIRECT CURRENT(DC) CURRENT: I = V/R or I = P/V VOLTAGE: V= P/I or V = IR POWER: I²R or VI RESISTANCE: R = V/I	I = current(amps.), V = voltage(volts), R = resistance(ohms), P = power(watts)

	ALTERNATING CURRENT(AC): CURRENT(single phase): I = P/(Vp cos(pf)) VOLTAGE(single phase): V=P/(Vp cos(pf)) POWER: V*I cos(pf)	Il = line current(amps.), Ip = phase current(amps.), Vp = phase voltage(volts), Vl = line voltage(volts) Z = impedance(ohms), P = power(watts), pf = power factor(angle), VA = volt ampers

	MECHANICAL ENGINEERING