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Physics
Physics
Problem
Assume that an electric field
E
⃗
=
30
x
2
i
^
\vec{E} = 30x^2\hat{i}
E
=
30
x
2
i
^
exists in space. Then the potential difference
V
A
−
V
O
V_A - V_O
V
A
−
V
O
, where
V
O
V_O
V
O
is the potential at the origin and
V
A
V_A
V
A
the potential at
x
=
2
m
x = 2 \text{ m}
x
=
2
m
is: a.
120
J/C
120 \text{ J/C}
120
J/C
b.
−
120
J/C
-120 \text{ J/C}
−
120
J/C
c.
−
80
J/C
-80 \text{ J/C}
−
80
J/C
d.
80
J/C
80 \text{ J/C}
80
J/C
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