What is the electric potential at point c if each side of the triangle has a length s?
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Answer:
Electric potential is a sealer quantity
∴ It can be added algebraically.
⇒V
net
=V
1
+V
2
+V
3
⇒V
net
=
r
kq
1
+
r
kq
2
+
r
kq
3
⇒V
net
=
r
k
(q
1
+q
2
+q
3
)
⇒V
net
=
(
3
20
×100)
9×10
9
(+4+4−4)×10
−6
=
20
9×10
9
×4×
3
×100×10
−6
V
net
=3.078×10
5
V
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