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Electric Charges And Fields

Question
CBSEENPH12037262

What is an electric field line? Sketch lines of field due to two equal positive charges placed at a small distance apart in air.

Solution

Electric field line or the line of force is the path along which a unit positive test charge would move when kept in an electrostatic field.
In other words, a field line is an imaginary line drawn such that its direction at any point is the same as the direction of the field at that point. 
Line of field due to two equal positive charge is shown below: