When r >> d, the electric field strength at the dot is +Q +) d +2Q +Q + Q 4TEgr2 4Q 4meo (72+d²) 4Q 4TEor 4Q 4TEor2 (x)

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When r >> d, the electric field strength at the dot is
+Q +
d
+2Q
+ Õ+
4TEor2
4Q
4meo (72+d²)
4Q
4Q
4TEO72
2Q
x)
Transcribed Image Text:When r >> d, the electric field strength at the dot is +Q + d +2Q + Õ+ 4TEor2 4Q 4meo (72+d²) 4Q 4Q 4TEO72 2Q x)
Expert Solution
Step 1

According to Coulomb's law the electric field at a point in space due to a charge is given by,

E=14πε0ql2           (1)where l=r2+d2

 

When rd

r2+d2r2            (2)

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