Physics
A geyser is rated '1500 W, 250 V'. This geyser is connected to 250 V mains. Calculate —
(i) the current drawn,
(ii) the energy consumed in 50 hours, and
(iii) the cost of energy consumed at ₹ 4.20 per kWh.
Current Electricity
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Answer
(i) Given,
P = 1500 W
V = 250 volt
Current drawn (I) =
Substituting the values in the formula, we get,
Hence, current drawn = 6 A
(ii) energy consumed in 50 hours = ?
t = 50 h
From relation,
E = P × t
Substituting the values in the formula above, we get,
E = 1500 x 50 = 75000 Wh = 75 kWh
Hence, energy consumed in 50 hours = 75 kWh
(iii) cost of energy consumed at ₹ 4.20 per kWh = ?
Cost per unit of energy = ₹ 4.20
Cost for 75 kWh of energy = 4.2 x 7.5
= ₹ 315
Hence, cost of energy consumed = ₹ 315
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