Two charges Q1=18 μ C and Q2=-2 μ C are separated by a distance R, and Q1 is on the left of Q2. The distance of the point where the net electric field is zero is

Question

Two charges Q1=18 μ C and Q2=-2 μ C are separated by a distance R, and Q1 is on the left of Q2. The distance of the point where the net electric field is zero is (A) between Q1 and Q2 (B) left of Q1 at R / 2 (C) right of Q2 at R (D) right of Q2 at R / 2

Tardigrade Admin · Accepted Answer

(k Q2/x2)=(k Q1/(x+R)2) or x=(R/2)

Q. Two charges $Q_{1} = 18 μ C$ and $Q_{2} = - 2 μ C$ are separated by a distance $R$ , and $Q_{1}$ is on the left of $Q_{2}$ . The distance of the point where the net electric field is zero is

between $Q_{1}$ and $Q_{2}$

left of $Q_{1}$ at $R /2$

right of $Q_{2}$ at $R$

right of $Q_{2}$ at $R /2$

$\frac{k Q _{2}}{x ^{2}} = \frac{k Q _{1}}{( x + R ) ^{2}}$ or $x = \frac{R}{2}$

Q. Two charges Q1​=18μC and Q2​=−2μC are separated by a distance R, and Q1​ is on the left of Q2​. The distance of the point where the net electric field is zero is

between Q1​ and Q2​

left of Q1​ at R/2

right of Q2​ at R

right of Q2​ at R/2