
One kilowatt hour is equal to:-
A. Joules
B. Joules
C. Joules
D. Joules
Answer
513.3k+ views
Hint: In order to solve this problem you need to know that one kilowatt hour is thousands joules per second. Knowing this will solve your problem and give you the right answer after doing the conversion of time and multiplying the kilowatt in with hour in terms of seconds.
Complete step-by-step answer:
We know that,
1 kilo watt = 1000 joules per second.
We also know that 1 hour = 3600 seconds.
Therefore, we can say 1 kilowatt hour is = 3600000 Joules = Joules.
Hence, one kilowatt hour is 3600000 joules.
So, the correct option is option A.
Note: It is the problem of conversion of units. Students can easily solve these questions if they have studied units and measurements thoroughly. Knowing units and measurements will help you in various competitive exams. Here we have first converted the kilo into 1000 and then we have converted the unit of power into joules per second. As we have asked to get the answer in joules so we have converted 1 hour into seconds and then multiplied it with joules per second and then the terms of seconds got cancelled and we got the answer in joules. Doing this in most of the problems of units and measurement will solve your problem and will give you the right answer and making strong the concept of units and measurement will help you many times.
Complete step-by-step answer:
We know that,
1 kilo watt = 1000 joules per second.
We also know that 1 hour = 3600 seconds.
Therefore, we can say 1 kilowatt hour is
Hence, one kilowatt hour is 3600000 joules.
So, the correct option is option A.
Note: It is the problem of conversion of units. Students can easily solve these questions if they have studied units and measurements thoroughly. Knowing units and measurements will help you in various competitive exams. Here we have first converted the kilo into 1000 and then we have converted the unit of power into joules per second. As we have asked to get the answer in joules so we have converted 1 hour into seconds and then multiplied it with joules per second and then the terms of seconds got cancelled and we got the answer in joules. Doing this in most of the problems of units and measurement will solve your problem and will give you the right answer and making strong the concept of units and measurement will help you many times.
Recently Updated Pages
Master Class 9 General Knowledge: Engaging Questions & Answers for Success

Master Class 9 English: Engaging Questions & Answers for Success

Master Class 9 Science: Engaging Questions & Answers for Success

Master Class 9 Social Science: Engaging Questions & Answers for Success

Master Class 9 Maths: Engaging Questions & Answers for Success

Class 9 Question and Answer - Your Ultimate Solutions Guide

Trending doubts
State and prove Bernoullis theorem class 11 physics CBSE

What are Quantum numbers Explain the quantum number class 11 chemistry CBSE

Write the differences between monocot plants and dicot class 11 biology CBSE

Who built the Grand Trunk Road AChandragupta Maurya class 11 social science CBSE

1 ton equals to A 100 kg B 1000 kg C 10 kg D 10000 class 11 physics CBSE

State the laws of reflection of light
