Derive 1 kWh=36 ×10^5 J.

Name: Problem 45, Chapter 7: Physics (Class 10)
Uploaded: 2019-08-18T10:18:57-08:00
Duration: 1 min 3 s
Channel: Ze-Han Lee
Description: Derive 1 kWh=36 ×10^5 J.

step 1 So in this problem, we need to verify that one kilowatts times hour is equivalent to 3 .6 times

Question

Derive $1 \mathrm{kWh}=36 \times 10^5 \mathrm{~J}$.

    Derive $1 \mathrm{kWh}=36 \times 10^5 \mathrm{~J}$.

Physics (Class 10)

Trishna Knowledge… 2nd Edition

Chapter 7, Problem 45

Instant Answer

Solved by Expert Ze-Han Lee

08/18/2019

Step 1

A kilowatt-hour (kWh) is a unit of energy. It represents the amount of energy consumed when a power of 1 kilowatt (kW) is used for 1 hour. Show more…

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Derive $1 \mathrm{kWh}=36 \times 10^5 \mathrm{~J}$.

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Key Concepts

Energy Unit Conversion

Energy conversion involves transforming a quantity expressed in one unit into an equivalent value expressed in another unit. In this context, a kilowatt-hour (kWh) represents the energy produced or consumed when 1000 watts (W) of power operate over the duration of one hour. Understanding that power is the rate of energy transfer, converting kWh to joules (J) necessitates multiplication by the appropriate time conversion factor.

Time Conversion

Time conversion is crucial in energy calculations, particularly when relating power (measured in watts, or joules per second) to energy. Recognizing that one hour is equal to 3600 seconds allows us to correctly compute energy by multiplying the power in watts by the time in seconds, ensuring a coherent transition from one unit system to another.

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