# Please help?! Thanks

##### 1 Answer

Jan 22, 2018

#### Explanation:

Field due to charge

So,if field has to be zero at point

so, we can write,

now,

so,equating both,we get,

Charge at

Jan 22, 2018

Field due to charge

So,if field has to be zero at point

so, we can write,

now,

so,equating both,we get,

Charge at