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Physics

Electric Power

a student use...

Question

a student uses 2 tube lights of 50 watt for 10 hrs , afn of 100 watt for 5 hrs and a immersion rod of 1 kw for 1 hr each day in his room if cost of electrical energy is rs ,.4 unit then bill of electricity in ithe month of november will be

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Solution

Total electric energy consumed in a day= (2 x 50 x 10 + 100 x 5 + 1000 x1) = 2500 Wh = 2.5 kWh
Total electric energy consumed in a month of nov. = 2.5 x 30 = 75 kWh
1 unit = 1kWh
Total unit consumed = 75 units
Total bill = 75 x 4 = Rs 300

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a student uses 2 tube lights of 50 watt for 10 hrs , afn of 100 watt for 5 hrs and a immersion rod of 1 kw for 1 hr each day in his room if cost of electrical energy is rs ,.4 unit then bill of electricity in ithe month of november will be

Total electric energy consumed in a day= (2 x 50 x 10 + 100 x 5 + 1000 x1) = 2500 Wh = 2.5 kWhTotal electric energy consumed in a month of nov. = 2.5 x 30 = 75 kWh 1 unit = 1kWhTotal unit consumed = 75 unitsTotal bill = 75 x 4 = Rs 300

Total electric energy consumed in a day= (2 x 50 x 10 + 100 x 5 + 1000 x1) = 2500 Wh = 2.5 kWh
Total electric energy consumed in a month of nov. = 2.5 x 30 = 75 kWh
1 unit = 1kWh
Total unit consumed = 75 units
Total bill = 75 x 4 = Rs 300