Polytechnic semester

What is power , explanation of power ,  uses of power , future of power Power :-  power is the product of  voltage and current. FROM FORMULA ,                         P = VI UNIT OF POWER IS WATT (W). POWER IS ALSO DEFINED AS THE RATE OF DOING WORK. FROM FORMULA ,                                   P = W / t = joule / sec Derivation of power                       P = VI                        P = V × V/R = V^2 / R   P = VI      = IR ×I = I^2 R

What is force , explanation of force , role of force in our daily life , important of force Definition of force :- force is a physical quantity that can change position of any object that means if any object in motion then we can change in rest and if any object in rest then we can change in motion. UNIT OF FORCE IS NEWTON DENOTED BY "N" . FORMULA OF FORCE                              F = ma         Other unit of force is kilogram meter per second square ( kgm/sec^2 )    Definition of 1 Newton                         The Newton is defined as when we applied any force to mass of 1kg and that is accelerated by 1 meter per second squared ( 1m/s^2 ) , Then that force is called 1 Newton.         From formula,                      F = ma     ...

  What is charge , types of charge , cation and anion Charge definition and their type      Charge means positive and negative ions, there are two types of charge cation and anion. Cation  This is contain positive charge (+) Anion  This contain negative charge (-)   Summary Any element contain proton , Electron and nuetron charges of this fundamental particles given below... Proton = positive charge (+) Electron = negative charge (-) Nuetron = no charge ( charge less) You can also understand positive charge means greater than real value. And Negative charge means less than real value. How you can identify  cation and anion Cation If ago any number no sign available than that is cation.  Anion If ago any number sign is negative (-) then that number is called anion.