31 An uncharged capacitor is charged by a batery and work done by battery is 2 E. This capacitor is then disconnected from the battery and combined with an identical uncharged capacitor. The total energy loss when steady state is reached
a) 3E/4. b)E/2. c)3E/2. d)3E/8
Answers
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1
Answer:
Correct option is c
Explanation:
Q
1
+Q
2
=Q
0
By KVL,
C
Q
1
−
C
Q
2
=0
or, Q
1
=Q
2
Q
1
+Q
2
=Q
0
Q
1
=Q
2
=Q
0/2
E
final
=
2c
1
(
2
Q
)
2
+
2c
1
(
2
Q
)
2
=
2c
1
4
Q
2
+
2c
1
4
Q
2
4c
Q
E
Q
E
f
=
2
1
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