Electromagnetism

Wikipedia se

Electromagnetism, electromagnetic field ke adhyan hae. Electromagnetic field uu chij ke chaahe dhakele nai to khiiche hae, jske lage electric charge hae, jaise ki electron aur proton. Isme electric force hae, jon sab charged particle ke dhakele hae aur magnetic force, jon ki khaali chale waala cgarge ke dhakele hae.

Dui rakam ke electric charge hae: positive aur negative. Electric force opposite charge (positive aur negative) ke ek duusre ke taraf khiiche hae aur jab ekke rakam ke charge rahe hae (duuno positive, nai to duuno negative) tab ek duusre ke duur dhakele hae.