Answer
P=1.3W
Work Step by Step
With the assumption that there is (at least) a voltage equal to that computed in
problem 70 of Chapter 24, in the proper direction to enable the transference of energy
(into a spark), then we use our result from that problem
$\ P=iV =(1.7\times 10^{-5}A) (7.8\times 10^{4}V)= 1.3W $
