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An electric appliance takes 5a when operated on a 220v supply,find the cost of operating the appliance for 12 hours at 10 kobo per kwh

220V * 5A = 1100W * 12hr = 13.2 kwh * 10kobo/kwh = 132 kobo

Did you know?

Did you know that the cost of operating an electric appliance can be calculated by multiplying the power consumption (in kilowatts) with the number of hours and the cost per kilowatt-hour? For instance, if an appliance takes 5 amps when operated on a 220-volt supply, we can determine its power consumption by multiplying the current (5 amps) with the voltage (220 volts), which gives us 1100 watts or 1.1 kilowatts. If the cost per kilowatt-hour is 10 kobo (0.10 naira), and the appliance is operated for 12 hours, we can calculate the cost by multiplying the power consumption (1.1 kWh) with the number of hours (12) and the cost per kilowatt-hour (0.10 naira). The result would be 1.32 naira, which is the cost of operating the appliance for 12 hours at 10 kobo per kilowatt-hour.