Consider a regular pentagon with identical point charges fixed at all five vertices…
PHYSICS · Multi-part · CBSE · Physics · Electric Charges and Fields · Electric Charges and Fields
Problem
Consider a regular pentagon with identical point charges +Q fixed at all five vertices and centre O.
(i) State the superposition principle for electric fields.
(ii) Using a clear vector diagram and suitable reasoning, explain why the net electric field at O is zero for this arrangement.
(iii) Would your conclusion in part (ii) change if all the charges were −Q instead of +Q? Give a brief justification.