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Physics
Physics
Problem
At a point in space, a
+
2.0
μ
C
+2.0\,\mu\text{C}
+
2.0
μ
C
test charge experiences a force
F
⃗
1
=
(
4.0
mN
)
i
^
−
(
6.0
mN
)
j
^
\vec{F}_{1}=\bigl(4.0\,\text{mN}\bigr)\,\hat i-\bigl(6.0\,\text{mN}\bigr)\,\hat j
F
1
=
(
4.0
mN
)
i
^
−
(
6.0
mN
)
j
^
. When the test charge is replaced by a
−
3.0
μ
C
-3.0\,\mu\text{C}
−
3.0
μ
C
charge, the force becomes
F
⃗
2
=
(
−
6.0
mN
)
i
^
+
(
9.0
mN
)
j
^
\vec{F}_{2}=\bigl(-6.0\,\text{mN}\bigr)\,\hat i+\bigl(9.0\,\text{mN}\bigr)\,\hat j
F
2
=
(
−
6.0
mN
)
i
^
+
(
9.0
mN
)
j
^
. Determine the electric field vector at that point.
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