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A conducting sphere of radius R= 20 cm i...

A conducting sphere of radius R= 20 cm is given a charge `Q= 16 mu C`. What is `vecE` at centre?

A

`3.6xx10^6 N/C`

B

`1.8xx10^6 N/C`

C

zero

D

`0.9xx10^6 N/C`

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