Physics, asked by navyakanugula8983, 1 year ago

Electric field inside a cavity with no charge inside is zero. Why?

Answers

Answered by faisalmansoor110
1

Consider a shell, it is hollow and there is just air inside it. Charge cannot reside in air anywhere. It needs a surface. Thus, charge there is zero. As GAUSS law states that:-

Surface integral of electric field is equal to 1/E° times the charge enclosed by it. As charge is zero, thus E is also zero

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