is the cost of operating a 3.00-W electric clock for a year if the cost of electricity is $0.0900 per kW?h ?

Step-by-step solution Step 1 of 1 The relation between the power of a device and energy consumed over a time period is As the time is given is year, convert it in hours Substitute the values of power , time in the above equation. As, cost of one is , the cost of is, Hence, the cost of operating a electric clock for a year is .