The SI unit of heat energy transferred is expressed in ______.

This question was previously asked in
RRB ALP Electrician 22 Jan 2019 Official Paper (Shift 3)
View all RRB ALP Papers >
  1. Amperes
  2. Joule
  3. Kilowatt
  4. Kelvin

Answer (Detailed Solution Below)

Option 2 : Joule
Free
General Science for All Railway Exams Mock Test
2.1 Lakh Users
20 Questions 20 Marks 15 Mins

Detailed Solution

Download Solution PDF

The correct answer is Joule.

Key Points

  • Heat
    • It is a form of energy that flows from one body to another due to the difference in temperature between the bodies.
    • It is simply the potential energy stored in the bonds that hold particles within the object together.
    • Heat or thermal energy is the form this energy possesses when it is transferred between systems and surroundings.
    • SI unit of energy is Joule (J) and from above it is clear that heat is a form of energy.
    • Therefore the SI unit of heat energy is Joule (J).

Additional Information

  • SI unit of other quantities is as shown below 
Quantity  SI unit  Formula
Resistance  Ohm \(R=\frac{\rho L}{A}\)
Charge Coulomb -
Power  Watt P = Work/time
Current  Ampere I = Q/t
Temperature Kelvin  
Latest RRB ALP Updates

Last updated on Jun 11, 2025

-> The RRB NTPC Admit Card 2025 has been released on 1st June 2025 on the official website.

-> The UPSC Prelims Result 2025 and UPSC IFS Result 2025 has been released @upsc.gov.in

-> Railway Recruitment Board activated the RRB ALP application form 2025 correction link, candidates can make the correction in the application form till 31st May 2025. 

-> The Railway Recruitment Board (RRB) has released the official RRB ALP Notification 2025 to fill 9,970 Assistant Loco Pilot posts.

-> The Railway Recruitment Board (RRB) has released the official RRB ALP Notification 2025 to fill 9,970 Assistant Loco Pilot posts.

-> The official RRB ALP Recruitment 2025 provides an overview of the vacancy, exam date, selection process, eligibility criteria and many more.

->The candidates must have passed 10th with ITI or Diploma to be eligible for this post. 

->The RRB Assistant Loco Pilot selection process comprises CBT I, CBT II, Computer Based Aptitude Test (CBAT), Document Verification, and Medical Examination.

-> This year, lakhs of aspiring candidates will take part in the recruitment process for this opportunity in Indian Railways. 

-> Serious aspirants should prepare for the exam with RRB ALP Previous Year Papers.

-> Attempt RRB ALP GK & Reasoning Free Mock Tests and RRB ALP Current Affairs Free Mock Tests here

Get Free Access Now
Hot Links: teen patti master apk best teen patti live teen patti classic teen patti master online teen patti earning app