Home
Looking for Previous Year IAS Papers? Download now free!
You will be auto-sent a link to download the IAS Past Papers & Model Papers when you join the IAS Free Training Group

Home | Downloads | Careers | Books |IAS Online TutorialsIAS online Tutorials | Advertise Advertise| Contact Us | About Us | ForumForum| Link to usLink to us
Login Friday, March 1, 2024

IAS Resources
About IAS
IAS Preparation
IAS Careers
IAS Syllabus
IAS Online Tutorials
IAS Free Online Exam
Indian Forest Service
Indian Engineering Service
Indian Foreign Service
Indian Police Service
Record and Opinion
Books and Links
Free Downloads
Miscellaneous


 Home » Tutorials » Chemistry » General Chemistry » Energy Measurements

Energy Measurements


A D V E R T I S E M E N T
>

Energy Measurements



Energy Measurements We have learned that chemistry is concerned with the properties of matter and with the energy changes that matter undergoes. We have discussed properties related to the mass and volume of a sample of matter.

(more content follows the advertisement below)
A D V E R T I S E M E N T


In this section we examine properties related to energy. Energy is measured either in joules (J) or in calories (cal), where the conversion factor relating the two units is:

4.184 J = 1 cal

The terms kilojoule (kJ), 1000 J, and kilocalorie (kcal), 1000 cal, are also commonly used. The large calorie (Calorie) used in nutrition is equal to one kilocalorie.

The amount of heat energy associated with a particular sample is dependent on its temperature, its mass, and its composition. Let us consider temperature before discussing its relationship to the energy of a sample.

Some measurement units are defined below:

Ampere (amp): A unit of electrical current or rate of flow of electrons. One volt across one ohm of resistance causes a current flow of one ampere. Amperes are used by utilities and electrical engineers to measure electrical flow.

Joule (J): A unit of electrical energy equal to the work done when a current of one ampere passes through a resistance of one ohm for one second (synonymous with watt-second).

Ohm: A measure of the electrical resistance of a material equal to the resistance of a circuit in which the potential difference of 1 volt produces a current of 1 ampere. Ohms are used by utilities and electrical engineers to measure the resistance of wires conducting electricity.

Volt: A unit of electrical force equal to the amount of electromotive force that will cause a steady current of one ampere to flow through a resistance of one ohm. High-voltage electricity moves faster than low-voltage electricity, as seen in the difference between high-voltage transmission lines used to move electricity quickly throughout a region and lower-voltage distribution lines used to move electricity directly to customers.

Voltage: The amount of electromotive force, measured in volts, that exists between two points. Voltage is used to describe the amount of power produced by a generator.

Watt (W): The rate of energy transfer equivalent to one ampere under an electrical pressure of one volt. One watt equals 1/746 horsepower, or one joule per second. It is the product of voltage and current (amperage). The term "watt" (in addition to the larger measurements of kilowatt and megawatt) is commonly used to describe the capacity of an electric generator. For example, a 1,000-watt photovoltaic system has the capacity to produce 1,000 watts of power at any given time, though it may not consistently produce this much.





Discussion Center

Discuss

Query

Feedback/ Suggestion

Yahoo Groups

Sirfdosti Groups

Contact Us




Members Login Here!
EmailId:
Password:


Forgot Password?
New User? Register!
Toppers View



INTERVIEW EBOOK
Get 9,000+ Interview Questions & Answers in an eBook. Interview Question & Answer Guide
  • 9,000+ Interview Questions
  • All Questions Answered
  • 5 FREE Bonuses
  • Free Upgrades

IAS PREPARATION EBOOKS

IAS Exam, IAS 2024, IAS 2025 Training, IAS 2023 Papers and Solutions, IAS Preparation & Related Pages


IAS Forum | Civil Services | IAS Overview | How to Prepare for IAS | IAS Eligibility Criteria | IAS Exam Pattern | IAS Exam Syllabus | IAS Application Form Centers | Sections Under IAS Examinations | Postings of an IAS Officer | Method of Making Notes | Style of Answering Questions | Time Management | IAS Regulations | Cut off Marks in IAS | Training Institutes for IAS | IAS Tips | Time Table for IAS 2024 Exam | Calendar for IAS 2024 Exam | Top Scorers in IAS Exam | Post Offices for IAS Exam Form | Sample IAS Exam Paper | IAS Current Affairs | Career in IAS | Jobs Offered in IAS | Nature of Work | Interview Tips for IAS | Interview Techniques for IAS | IAS Syllabus | IAS Preparation Strategy | IAS Model Notification | Daily / Periodicals for IAS | Art and Craft | IAS Tutorials | IAS Tutorials for Agriculture | IAS Tutorials for Animal Husbandry & Veterinary Science | IAS Tutorials for Botany | IAS Tutorials for Chemistry | IAS Tutorials for Economics | IAS Tutorials for Essay | IAS Tutorials for Geography | IAS Tutorials for Geology | IAS Tutorials for Indian History | IAS Tutorials for Physics | IAS Tutorials for Psychology | IAS Tutorials for Sociology | IAS Tutorials for Zoology | Previous Years Test Papers for IAS | IAS Mock Exam | Current Affairs for IAS | IFS - Indian Forest Services | IFS - Indian Forest Services Examination Plan | IFS - Indian Forest Services General Instructions | IFS - Indian Forest Services - List of Head Post Offices | IFS - Indian Forest Services Special Instructions | IES - Indian Engineering Service | IES - Indian Engineering Service Model Notification | IES - Indian Engineering Service General Instructions | IES - Indian Engineering Service Examination Plan | IFS - Indian Foreign Service | IFS - Indian Foreign Service - Selection & Training | Career in IFS - Indian Foreign Service | IPS - Indian Police Service - Modern Ranks and Rank Badges | IPS - Indian Police Service in History | IPS - Indian Police Service - External Resources | Reward of Brilliance | Deputation | Civil Lines | IAS Toppers Opinion | Renumeration in IAS | AKHAND PRATAP SINGH - IAS Topper | Anay Dwivedi - IAS Topper | Anupama - IAS Topper | D DIVYA - IAS Topper | Divyadharshini - IAS Topper | Divyadharshini Shanmugam - IAS Topper | Dr Sumit Seth - IAS Topper | GAGAN - IAS Topper | Garima Mittal - IAS Topper | GARIMA MITTAL - IAS Topper | Iqbal Dhalibal - IAS Topper | Iva Sahay - IAS Topper | JAI PRAKASH MAURYA - IAS Topper | Karthik Adapa - IAS Topper | Mangesh Kumar - IAS Topper | Manish Ranjan - IAS Topper | Muthyala Raju Revu - IAS Topper | Nila Mohan - IAS Topper | Pankaj Dwivedi - IAS Topper | PC Vinoj Kumar - IAS Topper | Prasad Praladh Akkanouru - IAS Topper | Prince Dhawan - IAS Topper | R V Varun Kumar - IAS Topper | RAVI DHAWAN - IAS Topper | Roopa Mishra - IAS Topper | Rukmani Riar - IAS Topper | Saswati Dey - IAS Topper | SASWATI DEY - IAS Topper | Shah faesal - IAS Topper | Shena Agrawal - IAS Topper | Sorabh Babu Maheshwari - IAS Topper | Sweta Mohanty - IAS Topper | TANVI SUNDRIYAL - IAS Topper | Vijayalakshmi Bidari - IAS Topper | IAS Books | SSC Exam Pattern | CDSC Exam Pattern | NDA Exam Pattern | GA - General Awareness Exam Pattern | PG - Post Graduate Exam Pattern |
Copyright © 2024. One Stop IAS.com. All rights reserved Privacy Policies | Terms and Conditions | About Us
Our Portals : Free eBooks | Interview Questions | IndiaJobForum | Free Classifieds | Vyoms | One Stop FAQs | One Stop GATE | One Stop GRE | One Stop IAS | One Stop MBA | Free SAP Training | One Stop Testing | Web Hosting | Sirf Dosti | Your Project Code | Cook Book Global | Tests World | Clean Jokes | Vyom | Vyom eBooks | Vyom Links | Vyom World | Shayari | C Interview Questions | C++ Interview Questions | Send Free SMS | Placement Papers | SMS Jokes | CAT 2024 Notification