Question
Download Solution PDFAn electric bulb of 100 Watt operates 10 hour a day. What is the cost of energy to operate it for one day at Rs. 6 per kWh?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFCONCEPT:
- Electric energy: The form of energy due to the flow of electrons is known as electric energy.
- The daily use appliances are given in power.
Energy = Power × time
- To calculate the cost of energy for electrical energy consumption, we use
Cost of energy = Rate of energy (in Rs per KWh) × total power used (in KW) × time (in hr)
EXPLANATION:
Given that P = 100 Watt = 0.1 KW; Time = 10 hours in one day
Rate of energy = Rs. 6 per kWh
So Cost of energy = Rate of energy (in Rs per KWh) × total power used (in KW) × time (in hr)
Cost of energy = 6 × 0.1 × 10 = 6 Rs
Hence the correct answer is option 4.
Last updated on Jul 4, 2025
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