Sample problem Topic: Power and energy Problem statement The voltage and current at the terminals of the circuit element in following figure are zero for t<0. For t>0 they are 1000100075 7550ttveViemA−−=−=(a) Find the maximum value of the power delivered to the circuit. (b) Find the total energy delivered to the element. Problem solution (a) The first thing is to find out the expression of power 10001000310002000(75 75)(5010 )(3.753.75)ttttPvieeeeW−−−−−== −×=−Recall that what is learned in calculus, or that the maximum value happens at the zero point of the derivative function 10002000375075000dPeedt+=By solving the above equation, the maximum point is obtained
This is the end of the preview. Sign up
access the rest of the document.
This note was uploaded on 10/30/2011 for the course EE 215 taught by Professor Unknown during the Spring '05 term at University of Washington.