Question

a bulb has power rating of 100W . what would be the cost of it's operation for 10 hours of 40 W costs x for 5hours

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Answer 1

Answer:

time=5hrs

no of bulb=1

electricity consume=?

now

ec=ptn

=200kwh

p=100w

no=1

time=10 hrs

ec=1000kwh

total ec=1200 units

total cost=1200x

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Answer 2

Explanation:

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