👉LIVE Classes: wa.me/923450044824 👉Subscribe: www.youtube.com/edkasa?sub_confirmation=1 Coulomb’s law is the mathematical description of the electric force between charged objects. Formulated by the 18th-century French physicist Charles-Augustin de Coulomb, it is analogous to Isaac Newton’s law of gravity. According to Coulomb, the electric force for charges at rest has the following properties: - Like charges repel each other; unlike charges attract. Thus, two negative charges repel one another, while a positive charge attracts a negative charge. - The attraction or repulsion acts along the line between the two charges. - The size of the force varies inversely as the square of the distance between the two charges. Therefore, if the distance between the two charges is doubled, the attraction or repulsion becomes weaker, decreasing to one-fourth of the original value. If the charges come 10 times closer, the size of the force increases by a factor of 100. - The size of the force is proportional to the value of each charge. The unit used to measure charge is the coulomb (C). If there were two positive charges, one of 0.1 coulomb and the second of 0.2 coulomb, they would repel each other with a force that depends on the product 0.2 × 0.1. Thus, if each of the charges were reduced by one-half, the repulsion would be reduced to one-quarter of its former value. Physics is a challenging subject. Physics in class 12 is the start of understanding complicated concepts, ideas, laws and numerical calculations. It can be overwhelming, we know. Edkasa helps hundreds of students build a focused understanding of Physics and improve exam performance. Our lectures are in Urdu or Hindi so you can easily understand the concept. If you are an intermediate, FSc., MDCAT, ECAT, NEET, or class 12 student taking Physics as a subject you must check out all our physics videos on www.youtube.com/edkasa. We breakdown all physics concepts in your textbooks as well as solve book problems and numericals with you in our videos. We also walk you through the most common question that have repeatedly shown up on past papers and exams so that you can be best prepared to answer them as soon as you see them on your actual exam. Best of all, our YouTube videos are free so you can watch them anytime, anywhere and as many times as you like. Edkasa Learning Comes Home

Be the first to comment