Question

If energy w = 200t^2+ 99 et + 2 then calculate at 0.1 sec

(a) 148.52

(b) 149.41

(c) 149.95

(d) 148.39

I had been asked this question in semester exam.

The query is from The International System of Units, Voltage and Current, Power and Energy in chapter Circuit Variables and Elements of Electric Circuits

Answer 1

Right option is (b) 149.41

To explain I would say: p=dw/dt

                         =400t +99e^t

                         =400(0.1) + 99e^(0.1)

                         =149.41