Electricity Equations

Question	Answer
What is the equation that connects current, charge flow and time?	Q = I x t Q = charge flow (C) I = current (A) t = time (s)
What equation links current, potential difference and resistance?	V = IR V = potential difference (V) I = current (A) R = Resistance (Ohms)
What is the equation for the total resistance of a series circuit?	Rt = R1 + R2 Rt = total resistance R1 + R2 = one resistor plus another
What equation links power, current and potential difference?	P = I x V P = power (W) I = current (A) V = potential difference (V)
What equation links power, current and resistance?	P = I2R P = power (W) I2 = current squared (A) R = Resistance (ohms)
What is the equation for energy transferred, power and time?	E = Pt E = energy transferred (J) P = power (W) t = time (s)
What equation links energy transferred, charge flow and potential difference?	E = Qv E = energy (j) Q = charge (C) V = potential difference (V)

Resource summary

	Created by clemmie chitty over 2 years ago