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Physics
Physics
Problem
Potential (
V
V
V
) at a point in space is given by
V
=
x
2
+
y
2
+
z
2
V = x^2 + y^2 + z^2
V
=
x
2
+
y
2
+
z
2
. Gravitational field at a point
(
x
,
y
,
z
)
(x, y, z)
(
x
,
y
,
z
)
is: (A)
−
2
x
i
^
−
2
y
j
^
−
2
z
k
^
-2x\hat{i} - 2y\hat{j} - 2z\hat{k}
−
2
x
i
^
−
2
y
j
^
−
2
z
k
^
(B)
2
x
i
^
+
2
y
j
^
+
2
z
k
^
2x\hat{i} + 2y\hat{j} + 2z\hat{k}
2
x
i
^
+
2
y
j
^
+
2
z
k
^
(C)
x
i
^
+
y
j
^
+
z
k
^
x\hat{i} + y\hat{j} + z\hat{k}
x
i
^
+
y
j
^
+
z
k
^
(D)
−
x
i
^
−
y
j
^
−
z
k
^
-x\hat{i} - y\hat{j} - z\hat{k}
−
x
i
^
−
y
j
^
−
z
k
^
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