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An LC circuit has an inductance of 20.0 mH and a capacitance of 5.00 mF. At...

An LC circuit has an inductance of 20.0 mH and a capacitance of 5.00 mF. At time t = 0 the charge on the capacitor is 3.0 mC and the current is 7.0 mA. To what voltage must the capacitor have been charged before it was attached to the inductor in the LC circuit?

A) 4.1 V                     B) 12 V                       C) 9.0 V                      D) 1.4 V                        E) 0.75 V

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Answer #1

Here capacitor and charge should be in micro units otherwise there will be huge difference in energy stored in inductor and capacitor.

I have solved considering micro units, if it is something else then let me know:

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