0 votes
in Physics by (71.7k points)

What is power? 


1 Answer

+1 vote
by (69.9k points)
selected by
Best answer

Power of a body is defined as the rate at which the body can do the work.

(1) Dimension : [P] = [ML2T–3

(2) Units : Watt or Joule/sec [S.I.] 

Practical Units : Kilowatt (kW), Mega watt (MW) and Horse power (hp) 

Relations between different units : 1 watt = 1 Joule/sec = 107 erg/sec 

1hp = 746 Watt 

(3) The slope of work time curve gives the instantaneous power. As P = dW/dt = tan θ

Related questions

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.