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VITEEE 2012 Solved Paper
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© examsnet.com
Question : 40
Total: 120
Three charges, each + q, are placed at the comers of an isosceles triangle ABC of sides BC and AC, 2a. D and E are the mid-points of BC and CA. The work done in taking a charge Q from D to E is
e
q
Q
8
π
ε
0
a
q
Q
4
π
ε
0
a
0
3
q
Q
4
π
ε
0
a
Validate
Solution:
Here,AC = BC
V
D
=
V
E
= V
W = Q
[
V
E
−
V
D
]
W = Q [V - V]
W = 0
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