Wires carrying an electrical current create a ____ field​ around them. Electromagnets are useful as they can be ____ unlike a permanent magnet. ​ This means they can be used for ____, ____ and ____ To make a strong electromagnet we need ____ , ____ and a large ____

لوحة الصدارة

النمط البصري

الخيارات

تبديل القالب

استعادة الحفظ التلقائي: ؟