Five bulbs each of 100 watt capacity in a tunnel are illuminated continuously for twenty hours. The consumption of electricity will be: एक सुरंग में 100 वॉट क्षमता वाले 5 बल्ब लगातार 20 घण्टे तक जलाए जाते हैं। सम्पूर्ण विद्युत खर्च होगी:

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Five bulbs each of 100 watt capacity in a tunnel are illuminated continuously for twenty hours. The consumption of electricity will be: एक सुरंग में 100 वॉट क्षमता वाले 5 बल्ब लगातार 20 घण्टे तक जलाए जाते हैं। सम्पूर्ण विद्युत खर्च होगी: