Science, asked by RohanMylo, 1 year ago

an electric bulb marked 60 watt is used for 5 hours in a week what is the cost of electricity if the rate is rupees 3 per unit​


RohanMylo: listen according to the question i have Posted what is the answer
RohanMylo: ??
uttam9568: 6.3 rupees
RohanMylo: 0.9 is wrong ??
uttam9568: no , its wrong
uttam9568: use E = Power(P) * Time(T).
uttam9568: This will give your one day unit
uttam9568: according to your questions it was used for a week(7 days)
uttam9568: Energy (of one day) * 7. This will give you energy of 7 day
uttam9568: To calculate cost , you know for one day it costs 3rupees so, for Energy used for 7 days cost will be energy of 7days * 3 rupees

Answers

Answered by nitin42472
1

for 1 week

60*5*7 that is 2100 watts

convert it into kwh or units.( both are same)

2100÷1000 that is 2.1 units

multiply it by 3

tor answer is ₹6.3

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