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Physics
Physics
Problem
A point charge
q
=
−
8.0
nC
q=-8.0\,\text{nC}
q
=
−
8.0
nC
is located at the origin. The electric field (in
N C
−
1
\text{N C}^{-1}
N C
−
1
) vector at the point
x
=
1.2
m
x=1.2\,\text{m}
x
=
1.2
m
,
y
=
−
1.6
m
y=-1.6\,\text{m}
y
=
−
1.6
m
, as shown in figure, is (1)
−
14.4
i
^
+
10.8
j
^
-14.4\hat{i}+10.8\hat{j}
−
14.4
i
^
+
10.8
j
^
(2)
−
14.4
i
^
−
10.8
j
^
-14.4\hat{i}-10.8\hat{j}
−
14.4
i
^
−
10.8
j
^
(3)
−
10.8
i
^
+
14.4
j
^
-10.8\hat{i}+14.4\hat{j}
−
10.8
i
^
+
14.4
j
^
(4)
−
10.8
i
^
−
14.4
j
^
-10.8\hat{i}-14.4\hat{j}
−
10.8
i
^
−
14.4
j
^
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