CLASS : IX SUB: SCIENCE
Physics project question.
1) Estimate the consumption of electricity at your home for 1 day assuming any two appliances are functioning 1. Fan 2. Mixer grinder.
Also calculate the electricity bill for 1 month.
Report this project not more than 3 pages.
Report should contain aim, materials required,formula defining terms, procedure, calculation, result and precautions
Answers
Total units consumed in month = 19.2 + 12 = 31.2 units
Explanation:
Fan power = 40 w
Average Daily usage = 16 hours
Mixer grinder = 800W
Average Daily usage = 0.5 hr
AIM : To find electricity consummations
Material required : Fan & Grinder , Paper , pen to note daily usage
Formula : 1 unit = 1 kwh = Power in watt * time in hrs /100
Fan power = 40 w
Average Daily usage = 16 hours
Mixer grinder = 800 W
Average Daily usage = 0.5 hr
Fan unit consumption in month = 40 * 16 * 30/1000 = 19.2 units
Mixer grinder unit consumption in month = 800 * 0.5 * 30/1000 = 12 units
Total units consumed = 19.2 + 12 = 31.2 units
Unit charges = Rs 5 per unit
Bill = 31.2 * 5 = Rs 156
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