Obtain an expression for pe, the rate at which the battery is supplying electrical energy to the circuit. express your answer in terms of the variables e, r, l. pep e = request answer part i in terms of e, r, l, at what value of t is pe a maximum? what is that maximum value? in terms of , , , at what value of is a maximum? what is that maximum value? t=0 and pe=e2r t=0 and pe=2e2r t →[infinity] and pe= e2r t → [infinity] and pe=2e2r