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Question
A geyser is rated 1500 W, 250 V. This geyser is connected to 250 V mains. Calculate:
- The current drawn,
- The energy consumed in 50 hours, and
- The cost of energy consumed at ₹ 4.20 per kWh.
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Solution
Given,
Power of geyser, P = 1500 W
Voltage, V = 250 V
- Current, I = `"P"/"V"`
I = `1500/250`
= 6 A - Time, t = 50 h
Energy, E = P × t
= 1500 × 50
= 75000 Wh
= 75 kWh - Cost per unit of energy = Rs 4.20
Cost for 75 kWh of energy = 4.20 × 75
= ₹ 315
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