How much power is produced if a voltage of #10 V# is applied to a circuit with a resistance of #300 Omega#? Physics Electrical Energy and Current Electric Power 1 Answer Callum S. May 19, 2018 #1/3W# Explanation: We are given that #V=10V# and that #Omega=300Omega#. We know that #P=I^2R#, and we also know that #V=IR#. Using these two things, we can deduce that #P=V^2/R#, and when we plug in the numbers, we get: #P=(10V)^2/(300Omega)=100/300=1/3# 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 1531 views around the world You can reuse this answer Creative Commons License