Engineering
Physics
Charge and Coulombs Law
Question

A few electric field lines for a system of two charges Q1 and Q2 fixed at two different points on the x-axis are shown in the figure. These lines suggest that

|Q1| > |Q2|

|Q1| < |Q2|

at a finite distance to the right of Q2 the electric field is zero

at a finite distance to the left of Q1 the electric field is zero

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Solution

| Q1 | > | Q2 |

  line density near Q1 is more                      

Q1 = +ve              

Q2 = – ve

and | Q1 | > | Q2 |

  E = 0 at right of Q2