Gce Model Questions Vol1 2020 Computer Studies Question 4
Practice objective / multiple choice question 4 from the 2020 Gce Model Questions Vol1 Computer Studies examination.
A desktop computer consists of a CPU that consumes 65 W, a monitor that consumes 40 W, and a hard‑disk that consumes 10 W. The power‑supply unit (PSU) is rated at 500 W and operates at an efficiency of 70 %. (i) What is the total power drawn from the mains when the computer is running? (ii) How much of that power is dissipated as heat by the PSU? (iii) If the computer runs for 5 hours, what is the energy consumption in kilowatt‑hours and the cost, assuming electricity costs ₦25 per kWh? Give the cost to two decimal places.
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This is Gce Model Questions Vol1 2020 Computer Studies Question 4. It is one of the objective questions from the 2020 Gce Model Questions Vol1 Computer Studies examination.
Difficulty level: Easy .
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