1
Question
An electric bulb of 40watt is used 50 days at 5 hrs perday find the unit of energy consumed by bulband cost of using electricity at the rate of 10 rupees per unit
An electric bulb of 40watt is used 50 days at 5 hrs perday find the unit of energy consumed by bulband cost of using electricity at the rate of 10 rupees per unit
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Solution
40w = 0.04 kw
total time = total days * hours per day
= 50*5=250hr
power = watts*time
= 0.04*250
= 10 units
total cost = no. of units*cost per 1 unit
= 10*10 = 100₹
total time = total days * hours per day
= 50*5=250hr
power = watts*time
= 0.04*250
= 10 units
total cost = no. of units*cost per 1 unit
= 10*10 = 100₹
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