Question #125848
An electric kettle (650w), refrigerator (1.5w),a television (79w)and 10 lamps(40w) each and electric iron(100w) are connected in series in a house. How much will cost the housekeeper to switch on all the appliances for 24 hours if the cost of electricity from PHCN is 18 kobo per kwh?
1
Expert's answer
2020-07-10T10:23:58-0400

Total power


P=650+1.5+79+10⋅40+100=1230.5W=1.2305kWP=650+1.5+79+10\cdot40+100=1230.5W=1.2305kW


Cost=1.2305⋅24⋅18=531.58kobo=1.2305\cdot24\cdot18=531.58kobo





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