Answer:
(i) In the solar cells,
the energy is obtained only during the day, when the Sun shines.
(ii) In the
solar cells, the solar panel convert solar energy into electricity, which is
stored in storage battery. The storage battery give the direct current but all
the appliances are working by the alternating current, so first of all direct
current is converted into alternating current by any suitable appliances before
it can be used to run various devices. So, it increases the cost of using solar
panels as the source of energy.
So,
the solar cell is not used to meet all our energy needs.
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