Answer
(a) $E = 0.36~J$
(b) $Q = 8.0\times 10^{-4}~C$
Work Step by Step
(a) We can find the energy:
$E = P~t $
$E = IVt$
$E = (0.80~A)(450~V)(1.0\times 10^{-3}~s)$
$E = 0.36~J$
(b) We can find the charge:
$Q = I~t$
$Q = (0.80~A)(1.0\times 10^{-3}~s)$
$Q = 8.0\times 10^{-4}~C$
