I only got 70 in 1st year. Our teacher suggest us to use Balochistan book for Physics. Can you kindly tell me from which book you have studied kpk or Balochistan. And how to get 80+ marks in physics.?
Mera dil chah raha hy k kash is mai Aik nahi balkai aik sai ziyada subscribe or like ka option hota tu sir mai ap ko dil kol ker subscribe or like kerta because sir u are that person who help me in our hard time..😍😍
wating for your 200k subscribers. Thanks for teach me physics in 9,10,11,12 and this four year journey is end today😢. Because today is my second year physics paper❤😢😢😢
sir i have studied my first year through ur videos and scored good marks and now iam watching for 2 nd year hope so again i will get good marks sir but plz also upload mdcat phys lectures bcz it will help us
Great video. One thing I want to add is that generally electric irons are rated for 220V instead of 1000 volts. It is their power rating that is around 1000 Watts.
Sir lakin lamination say agar eddy current ko resistance milay gi to kya jo transformer ka apna flux primary coil say secondary coil main jata hai usy nhi resistance milay gi ??
In transformers, the current flows through the copper wire instead of the iron core due to several reasons: 1. Electrical Conductivity: Copper has a higher electrical conductivity (59.6 x 10^7 Siemens/m) compared to iron (1.04 x 10^7 Siemens/m). Copper's higher conductivity allows it to efficiently carry electrical current. 2. Resistivity: Copper has lower resistivity (1.68 x 10^-8 Ωm) than iron (9.71 x 10^-8 Ωm), resulting in less energy loss as heat. 3. Magnetic Permeability: Iron has high magnetic permeability, making it ideal for the core, guiding the magnetic field. 4. Saturation Point: Iron's magnetic saturation point is higher, allowing it to handle larger magnetic flux densities without losing efficiency. 5. Cost and Durability: Copper is more ductile and easier to shape, making it suitable for winding. Iron core's primary function is to provide a low-reluctance path for the magnetic field, enhancing transformer efficiency. Copper wire's high conductivity ensures efficient current flow, while iron core's magnetic properties facilitate flux transmission.
if we increase no of coils the resistance increases when resistance increases voltage also increases as a result current reduces thats why voltage is inversely relation to current i hope you will get the point
