What is the final cost of running the lamps for the specified duration?

Study for the NEC Construction Wiring Exam. Utilize comprehensive practice questions to reinforce your knowledge on essential wiring principles. Prepare effectively for your certification!

To determine the final cost of running the lamps for the specified duration, it's essential to understand the formula for calculating electricity costs. The cost can be calculated using the formula:

Cost ($) = Power (kW) × Time (hours) × Rate ($/kWh).

In this scenario, the details would involve the wattage of the lamps converted to kilowatts, the total runtime in hours, and the electricity rate provided, typically in cents per kilowatt-hour (kWh).

If the answer is 46.7 cents, it indicates that when applying the appropriate values for power consumption, duration, and rate, the multiplication yields a total cost of about 0.467 dollars or 46.7 cents.

To support this, if the calculated power usage and cost rate were precise and adhered to the relevant units, this aligns with the expected outcome. The calculations might involve rounding or approximations typical in practical scenarios.

By understanding and applying these concepts critically, the computation demonstrates how to derive an accurate running cost for electrical appliances based on their specifications and local electricity rates.

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