35. What is the total cost (in paise) of operating an electric motor for 8 hours if it draws 15 Ampe — Electrochemistry Chemistry Question
Question
35. What is the total cost (in paise) of operating an electric motor for 8 hours if it draws 15 Amperes of current at 110 Volts, assuming electricity costs 5 paise per KWH?
Answer: A
💡 Solution & Explanation
Power = Voltage $\times$ Current = $110 \times 15 = 1650$ W = 1.65 kW. Total Energy = Power $\times$ Time = $1.65 \text{ kW} \times 8 \text{ h} = 13.2$ kWh. Total Cost = $13.2 \times 5 \text{ paise} = 66$ paise.
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