What is the cost of running five 50W lamps and four 100W lamps for 10 hours if electrical energy costs 2 Kobo per KWh? by Sunday | Mar 25 | Physics JAMB | 0 comments A. N0.65 B. N0.39 C. N3.90 D. N0.13 Correct Answer: Option D = N0.13 Users Also Read These:The cost of running five 60 W lamps and four 100 W…Two similar cells are used to light two similar…BY definition, variable cost (VC) is related to…A lamp rated 100W, 240V is lit for 5hours. Calculate…What is the cost of running seven 40W lamps and five…