11 grade physics others
One kilowatt hour is equal to:
- A. 36 × 10⁵ Joules
- B. 36 × 10³ Joules
- C. 10³ Joules
- D. 10⁵ Joules
One kilowatt hour is equal to:
- A. 36 × 10⁵ Joules
- B. 36 × 10³ Joules
- C. 10³ Joules
- D. 10⁵ Joules
1 Answer
Askiitians Tutor Team
Approved Tutor Answer10 Months agoOne kilowatt hour (kWh) is a unit of energy commonly used to measure electricity consumption. To understand its equivalent in Joules, we can break it down:
Conversion Basics
1 kilowatt hour is defined as the amount of energy consumed when a power of 1 kilowatt is used for 1 hour. In terms of Joules, the conversion is as follows:
Calculating Joules
- 1 kilowatt = 1,000 watts
- 1 hour = 3,600 seconds
Therefore, the energy in Joules can be calculated as:
Energy (Joules) = Power (Watts) × Time (seconds)
Substituting the values:
Energy = 1,000 watts × 3,600 seconds = 3,600,000 Joules
Final Answer
This means:
1 kWh = 3.6 × 10⁶ Joules
Among the options provided, the correct answer is:
A. 36 × 10⁵ Joules
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