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Question
An electric oven is rated as 1.5 kW, 250 V. If it is connected to a 250 V mains, calculate the
(a) Current drawn,
(b) Energy consumed in 20 hours,
(c) Cost of energy consumed in 20 hours at the rate of Re. 1 per unit.
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Solution
Given, Power P = 1.5 kW, voltage V= 250 V
(a) Current, I= `"P"/"V" = (1.5 xx 1000)/250 = 6 "A"`
(b) Energy consumed in 20 hrs= P x t = 1.5 x 20 = 30 kWh
( c) Cost of consumed energy @Re. 1 per unit= 1 x 30 =Rs. 30
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