In order to find the resultant of two vectors we must use the pythagoran therom, a +b2-2. Where the crepresents the resultant ve
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The electric field strength is inversely related to the square of the distance.so the strength of the electric field is given by
Here, is constant depend upon medium and its value is
and q is charge and r is the distance.
Given and we know the charge of proton,
.
Therefore,