Is there any point on the line on which the two charges lie where the electric field is zero?

Yes. The net electric field will be zero at the mid-point of the line joining the two identical charges.

Is there a point where the electric field is zero?

There is no zero-field point for a pair of equal-magnitude-but-opposite-sign charges. Electric field is zero in that point because the sum of electric field vectors have same intensity and direction, but are opposite. That point is halfway between two like charges.

At what point on a line joining the two charges is the electric field zero?

At what point(s) on the line joining the two charges is the electric potential zero? Take the potential at infinity to be zero.

Is there a point along the line joining two equal positive charges where the electric field is zero where the electric potential is zero explain?

Is there a point along the line joining two equal positive charges where the electric field is zero? Where the electric potential is zero? Explain. The electric field is zero at the midpoint of the line segment joining the two equal positive charges.

Is there a point at a finite distance where the electric potential is zero?

Is there a point at finite distance where the electric potential is zero? … (b) Yes; it is between x = 0 and x = 500 mm.

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