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What is the magnitude of a point charge ...

What is the magnitude of a point charge due to which the electric field `30cm` away the magnitude `2`?
`[1//4 pi epsilon_(0)=9xx10^(9)Nm^(2)//C^(2)]`

A

`2xx10^(-11)C`

B

`3xx10^(-11)C`

C

`5xx10^(-11)C`

D

`9xx10^(-11)C`

Text Solution

Verified by Experts

(a) Electric field due to a point charge `E=q/(4piepsilon_(0)r^(2))`
`:. q=Exx4piepsilon_(0)r^(2)=2xx1/(9xx10^(9))xx(30/100)^(2)`
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