فرق الكمون الكهربائي شرح الدرس كامل مع حل الأسئلة \ الصف الثامن الإعدادي
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شرح مفهوم الكمون الكهربائي : هو مقدار الطاقة الكهربائية الكامنة لدى واحد كولوم من الشحنة . حيث أن الشحنة الكهربائية تحمل طاقة وبالتالي أتى لدينا مفهوم فرق الكمون : وهو الفرق في مقدار الطاقة الكهربائية الكامنة بين هاتين النقطتين طبعا في حال وجود فرق في الشحنة هذا يؤدي إلى سير التيار الكهربائي . أي سير الإلكترونات من القطب السالب إلى القطب الموجب سير هذه الالكترونات هي التيار الكهربائي وطبعاً جهة التيار عكس جهة حركة الإلكترونات أي أن جهة التيار الكهربائي من الموجب إلى السالب. سوف نشرح أيضاً : ثنائي القطب الفعال مثل المولد وهو الذي يولد التيار الكهربائي حيث أنه يمد الشحنات الكهربائية بالطاقة حتى تتحرك وثنائي القطب غير الفعال مثل المصباح مقياس فولت الذي يقيس فرق الكمون الكهربائي بين نقطتين ويوصل دائما على التفرع مقياس فولت في دارة موصولة تسلسل : يكون فرق الكمون بين قطبي المولد يساوي مجموع الكمون الجزئي في أجزاء الدارة U = U1 + U 2 ومقياس فولت في دارة موصولة تفرع : بكون فرق الكمون الكهربائي بين طرفي المولد يساوي فرق الكمون بين كل جزء من أجزاء الدارة U = U1 = U2 نرمز للكمون الكهربائي بالحرف U وواحدته فولت V
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