Question

& voltage - 0.5 to IV.
Electricity -0.71
0.7w. how can we do???
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Answer 1

Answer:

4 Solar Cells

Step-by-step explanation:

For 0.7 w = 1 cell

For 2.8w = 2.8/0.7

= 4

Answer 2

Answer:

w=I^2×r×t

r=v/I

r=-0.5/-0.71 = 0.00704 approx

t=30 seconds

I= -0.71

w=0.5041×30×0.00704=

=1.06465292.

hope it helps you