A charge of #27 C# passes through a circuit every #3 s#. If the circuit can generate #72 W# of power, what is the circuit's resistance? Physics Electrical Energy and Current Electric Power 1 Answer ali ergin Apr 8, 2016 #R=8/9 Ohm# Explanation: #"given data:"# #q=27C" charge"# #Delta t=3 s" time interval"# #P=72W" Power"# #R=?" Resistance"# #so" " P=I^2*R# #"we must calculate the electric current I"# #I=(Delta q)/(Delta t)# #I=27/3=9A# #cancel(72)=cancel(9)^2*R# #8=9*R# #R=8/9 Ohm# Answer link Related questions What is the SI for a unit of power? What is a kilowatt-hour? Where can I see an electric circuit in my home and car? Why do batteries run down? When an electrochemical cell no longer works, can it be recharged before it can be used again? How does a rechargeable battery work? Question #129ab Why is electric power transmitted at high voltages? What is a unit of electrical current? What is an electric current that reverses its direction in a regular pattern? See all questions in Electric Power Impact of this question 966 views around the world You can reuse this answer Creative Commons License