A) 10C
B) 20C
C) 30C
D) 40C
Correct Answer: B
Solution :
According to question \[\frac{\frac{q_{f}^{2}}{2C}-\frac{q_{i}^{2}}{2C}}{\frac{q_{i}^{2}}{2C}}\times 100=21\]and \[{{q}_{f}}-{{q}_{i}}=2\] Solving, we get \[{{q}_{i}}=20C.\]You need to login to perform this action.
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