তড়িৎ প্রাবল্য
তড়িৎ ক্ষেত্রের কোন বিন্দুতে একটি একক ধনাত্মক আধান স্থাপন করলে সেটি যে বল অনুভব করে তাই তড়িৎ প্রাবল্য ।প্রশ্ন হচ্ছে এখানে ধনাত্মক আদানের কথা বলা হয়েছে কেন?ঋণাত্মক আদান নিলে সমস্যা কোথাই?
Re: তড়িৎ প্রাবল্য
There is no problem with taking negative charge. The sign of anything in electrodynamics is a convention, not a law.
In fact, the idea of positive and negative charge themselves are conventions aren't they? It's because historically it was thought that moving positive charges were the cause of electricity, and the theory was simpler if we choose to define what causes electricity as being positive. But, of course, as we know now, it's actually the negatively charged electrons that are the cause of electricity. But now it's too late to change the definition. If you knew about electrons earlier than we would have defined electron being positive.
In fact, the idea of positive and negative charge themselves are conventions aren't they? It's because historically it was thought that moving positive charges were the cause of electricity, and the theory was simpler if we choose to define what causes electricity as being positive. But, of course, as we know now, it's actually the negatively charged electrons that are the cause of electricity. But now it's too late to change the definition. If you knew about electrons earlier than we would have defined electron being positive.
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Re: তড়িৎ প্রাবল্য
ঋণাত্নক আধান নিলে তড়িৎ প্রাবল্যের মান কী ঋণাত্নক হয়?
Re: তড়িৎ প্রাবল্য
তড়িৎ প্রাবল্য হচ্ছে এক ধরনের বল । ঋণাত্মক আধান নিলে এটা ধনাত্মক হবে না ঋণাত্মক হবে তা নির্ভর করবে ক্ষেত্র সৃষ্টিকারী আধানের উপর।
Re: তড়িৎ প্রাবল্য
As I said, all signs in electrodynamics definitions are conventions. You can choose the sign as you wish.
Re: তড়িৎ প্রাবল্য
If I choose negative sign for electron, I have to use positive sign for proton, isn't it?
Re: তড়িৎ প্রাবল্য
yes; they are opposite.