Question
Download Solution PDFThe commercial unit of electrical energy is kilowatt-hour (kWh), which is equal to
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
Electric energy is defined as the movement of charged particles or electrons from one point to another through a medium (like a wire).
- The basic unit of electrical energy is the joule or Watt-second.
- 1 Watt = 1 Joule
- An electrical energy is said to be one joule when one ampere of current flows through the circuit for a second when the potential difference of one volt is applied across it
- The commercial unit of electrical energy is the kilowatt-hour (kWh)
- One kilowatt = 1000 Watt
- 1 hour = 60 × 60 = 3600 second
Calculation:
1kilowatt-hour (kWh) =1000 × 60 × 60 Watt-second or joule
⇒ 3.6 × 106 joule
Additional Information
SI unit of work and energy is Joule
1 N-m = 1 Joule
| 1 calorie | 4.184 Joule |
| 1 horsepower (hp) | 2,684,519.54 Joule |
| 1 eV (electron Volt) | 1.6 × 10-19 Joule |
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