Two point charges `+8q` and `-2q` are located at `x=0` and `x=L` respectively. The location of a point on the x axis at which the net electric field due to these two point charges is zero isA. (a) `L/4`B. (b) `2L`C. (c) `4L`D. (d) `8L`

Two point charges `+8q` and `-2q` are located at `x=0` and `x=L` respe

1.	Two point charges `+8q` and `-2q` are located at `x=0` and `x=L` respectively. The location of a point on the x axis at which the net electric field due to these two point charges is zero isA. (a) `L/4`B. (b) `2L`C. (c) `4L`D. (d) `8L`
Answer» Correct Answer - B `(-K2q)/(x-L)^2+(K8q)/(x^2)=0implies(1)/((x-L)^2)=(4)/(x^2)` or `(1)/(x-L)=2/ximpliesx=2x-2L` or `x=2L`

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Two point charges `+8q` and `-2q` are located at `x=0` and `x=L` respectively. The location of a point on the x axis at which the net electric field due to these two point charges is zero isA. (a) `L/4`B. (b) `2L`C. (c) `4L`D. (d) `8L`

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