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বিন্দু চার্জ কি?

Md. Saifur Rahman

আহিত বস্তুর আকার যখন খুবই ক্ষুদ্র হয় তখন ঐ আহিত বস্তুর চার্জকে বিন্দু চার্জ বলা হয়।

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