Question

An electric heater rated 880W operates 6h/day. Find the coat of energy to operate it for 30 days at Rs 3.00 per unit.

Answer 1

$\huge\underline\blue{\sf Answer:}$

$\red{\boxed{\sf Cost\:of\: Energy\:is\:Rs.475.2 }}$

$\huge\underline\blue{\sf Solution:}$

$\large\underline\pink{\sf Given: }$

• Power (P) = 880W

• Days = 30 days

• Time = 6h/day

• Price per unit = Rs. 3

$\large\underline\pink{\sf To\:Find: }$

• Cost of Energy to operate 30 days = ?

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We know that ,

${\boxed{\sf Energy=Power×Time }}$

$\large\implies{\sf E=880×6 }$

$\large\implies{\sf E= 5280 }$

$\large\implies{\sf E=5.28kwh\:or\:5.28\:unit }$

For 30 days :-

$\large\implies{\sf E=5.28×30 }$

$\large\implies{\sf E=158.4kwh\:158.4\:unit}$

Price per unit is Rs. 3

So ,

$\large\implies{\sf 158.4×3 }$

$\large\implies{\sf Rs.475.2 }$

Hence ,

$\red{\boxed{\sf Cost\:of\: Energy\:is\:Rs.475.2 }}$