current or voltage we measure for AC are alaways rms(root mean square) value not the actual magnitude so 220 volt ac(rms)= 220*sqrt(2)=311 volt but 220 volt DC alaways gives the magnitude...
Physics is not only a subject it is an observation. So if someone wants to learn physics first thing he needs to learn is just how to observe things. Just take an example of a guy who is sitting inside...
How to use kinematic equations and when to use them? We all know the 3 kinematic equations which are S= ut + 1/2 at² V = u + at V²= u² + 2as Many students find it difficult to understand...