A toaster oven uses 67,500 joules of energy in 45 seconds to toast a piece of bread. What is the power of the oven? Physics Work and Energy Power 1 Answer Sabarish Iyer · Becca M. Aug 3, 2014 #P=W/t# and #W#=Work In this case, #W=67,500J# and #t=45# seconds Power is the ratio of Work per unit time. When you perform a work in a given span of time, the ratio of work performed with respect to time is called Power. SI unit of Power is Watt(W). So, #P=67500/45# #P=1500 W# Answer link Related questions What is power? How are work and power related? How are force and power related? How does power affect work? How does power differ from energy? How does power change with voltage? How does power relate to torque? How does work relate to conservation of energy? How does work relate to gravitational potential energy? What is horsepower? See all questions in Power Impact of this question 8717 views around the world You can reuse this answer Creative Commons License