Question

hi writ ea paragraph on solar cell​

Answer 1

Answer:

A solar cell, or photovoltaic cell, is an electrical device that converts the energy of light directly into electricity by the photovoltaic effect, which is a physical and chemical phenomenon. Solar cells are described as being photovoltaic, irrespective of whether the source is sunlight or an artificial light.

Answer 2

No, as you said earlier, "responsibility" is singualr, so the person holding that position has only one responsibility or whatever he does is considered as one concept, responsibility, but "responsibilities" is plural and the person has more than one responsibility.