Revision of work and power

04.01.2020
09:44:03
Dear students, good morning everyone
Today we will discuss the remaining concepts in work and power
Concept : power pg.no :109 to 111
The important points are
1. Powe - the rate at which the work is done or rate at which energy is transferred
2.Unit : watts ( W)
1W = 1 J / s
3.efficiency = useful powe output / power input x 100 %
4.refer the worked examples 8.3 in pg no : 110
Revise well and practice
No homework