At high school student commonly do lot of mistakes while studying electrostatics chapter.They fail to understand the concept of electric field.As gravitatational field in concept appears similar to electric field they apply the same sign conventions ,however it is not so in this chapter.Concepts such as null points and zero potential points often confuse them,they apply the same formula for both.Recently a student was asking doubt on field calculation due to niformly charged ring,whatever formula we derive for electric field it is only for point on the axial line and not anywhere else near the ring.Finding at a random point is very difficult and follows a different procedure,which is beyond the scope of high school syllabus.If you want to learn this chapter ,join my classes,you can whatsapp me for admission
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