Question

An electric applinance of rating 300 w is used 5 hours per day in the month of march.Find the number of unit consumed
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Answer 1

Answer:

Data: P=300 W

t= 5hours/day ×31 days

=155 hours

1unit= 1kW.h=1000W.h

N= Pt/1000W.h/unit

=300W X 155 hours/1000W.h/unit

=46.5 units

Explanation: 46.5 units are consumed in the month of March.