11. In the following figure, the electric field on y-axis will be maximaum at y=..
1)d/2
2)d/root2
3)d/3
4)d/√3
Answers
Answered by
1
Answer:
E=
(n
2
+l
2
)
3/2
P
r=Y
dY
dE
=
dy(Y
2
+l
2
)
3/2
P
=0
=P
dy
d
(Y
2
+l
2
)
−3/2
=0
or, P×
2
−3
(y
2
+d
2
)
−3/2−1
=0
or, P×(−
2
3
)(y
2
+d
2
)
−
2
5
=0
where l=d
Now,
P(−
2
3
)(y
2
+d
2
)
2
−5
=0
or, d
2
+y
2
=0
or, d=−y
or, y=−
2
d
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