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PHY102 (Question Set Two)
Question 8 of 50
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Electric Field & Potential
PAST QUESTION
If z ≫ d in question 13 above, the electric field will be expressed as
A
2
q
z
K
/
[
z
2
+
(
d
/
2
)
2
]
(
3
/
2
)
2qzK / [z^{2} + (d/2)^{2}]^(3/2)
2
q
z
K
/
[
z
2
+
(
d
/2
)
2
]
(
3/2
)
B
(
1
/
4
π
ε
0
)
(
2
q
/
r
2
)
cos
θ
(1/4 \pi \varepsilon _{0})(2q/r^{2}) \cos \theta
(
1/4
π
ε
0
)
(
2
q
/
r
2
)
cos
θ
C
(
1
/
4
π
ε
0
)
(
q
/
r
2
)
sin
θ
(1/4 \pi \varepsilon _{0})(q/r^{2}) \sin \theta
(
1/4
π
ε
0
)
(
q
/
r
2
)
sin
θ
D
(
1
/
4
π
ε
0
)
×
q
d
/
[
z
2
+
(
d
/
2
)
2
]
(
3
/
2
)
×
ı
^
(1/4 \pi \varepsilon _{0}) \times qd/[z^{2} + (d/2)^{2}]^(3/2) \times î
(
1/4
π
ε
0
)
×
q
d
/
[
z
2
+
(
d
/2
)
2
]
(
3/2
)
×
ı
^
E
(
1
/
4
π
ε
0
)
×
2
q
/
z
2
×
k
^
(1/4 \pi \varepsilon _{0}) \times 2q/z^{2} \times k̂
(
1/4
π
ε
0
)
×
2
q
/
z
2
×
k
^
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