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Physics
Physics
Problem
It is required to hold equal charges
q
q
q
in equilibrium at the corners of a square. What charge when placed at the center of the square will do this? (1)
−
q
2
(
1
+
2
2
)
-\frac{q}{2}(1+2\sqrt{2})
−
2
q
(
1
+
2
2
)
(2)
q
2
(
1
+
2
2
)
\frac{q}{2}(1+2\sqrt{2})
2
q
(
1
+
2
2
)
(3)
q
4
(
1
+
2
2
)
\frac{q}{4}(1+2\sqrt{2})
4
q
(
1
+
2
2
)
(4)
−
q
4
(
1
+
2
2
)
-\frac{q}{4}(1+2\sqrt{2})
−
4
q
(
1
+
2
2
)
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