Question
Download Solution PDFIn an electric circuit, if power, voltage and resistance are represented by P, V and R, respectively, then the correct relation between them is:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is \(\rm P = {V^2 \over R}\)
Key Points
- Electric power is the rate at which work is done or energy is transformed into an electrical circuit.
- It is a Scalar quantity.
- The formula for electric power is given by, \(P=VI\)
- But, we know according to ohms law we have: \(V=IR\)
- So we have \(I={V\over R}\)
- Substituting, I in the power equation we have: \(P={V*V\over R}={V^2\over R}\)
- Therefore, \(P={V^2 \over R}\).
Last updated on Jun 30, 2025
-> The RRB NTPC Admit Card 2025 has been released on 1st June 2025 on the official website.
-> The RRB Group D Exam Date will be soon announce on the official website. Candidates can check it through here about the exam schedule, admit card, shift timings, exam patten and many more.
-> A total of 1,08,22,423 applications have been received for the RRB Group D Exam 2025.
-> The RRB Group D Recruitment 2025 Notification was released for 32438 vacancies of various level 1 posts like Assistant Pointsman, Track Maintainer (Grade-IV), Assistant, S&T, etc.
-> The minimum educational qualification for RRB Group D Recruitment (Level-1 posts) has been updated to have at least a 10th pass, ITI, or an equivalent qualification, or a National Apprenticeship Certificate (NAC) granted by the NCVT.
-> This is an excellent opportunity for 10th-pass candidates with ITI qualifications as they are eligible for these posts.
-> The selection of the candidates is based on the CBT, Physical Test, and Document Verification.
-> Prepare for the exam with RRB Group D Previous Year Papers.