Question

Note: -
You are attempting question 5 out of 10
Calculate the total energy of the power signal between 0 s and 140 s shown in the
following figure:
P(mW)
SO
0
20
40
60
80
100 120.140
Time (seconds)
(a) 0.944 mWh
(b) 3400 mWh
(c) 0.944 Wh
d)3400wh​

Answer 1

Answer:

I think energy can be calculated using

E=P×t

for ex. from 0 to 20 seconds..power is 10mW

i.e. E = 20×10 mJ= 200mJ

similarly you can add energy for all blocks

from 20 to 40 ,40 to 60 ,60 to 80, 80 to 100,100 to 140 ...

but remember.. time taken should be difference between blocks ...i.e. for 80 to 100 ..time should be 20 seconds..the difference..

hope it helped