Why electric field at the centre of a disc is not zero?
Akash , 7 Years ago
Grade 12
Electrostatics> Why electric field at the centre of a dis...
1 AnswersSanjay Deshmukh
Last Activity: 7 Years ago
- Divide the disc into concentric rings with centre of the disc taken as common centre for all rings.
- We know, electric field at the centre of a ring is 0.
- Hence electric field due to all the possible concentric rings at the centre would be 0.
- BUT
- There would still be a charge left due to a small point charge at the centre of the disc which would not be taken as a ring.
- Hence it would constitute some charge which is why electric field is generated.
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