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In: Physics

Two capacitors C1 = 2 µF and C2 = 6 µF are connected in parallel across...

Two capacitors C1 = 2 µF and C2 = 6 µF are connected in parallel across a 11 V battery. They are carefully disconnected so that they are not discharged and are reconnected to each other with positive plate to negative plate and negative plate to positive plate (with no battery).

(a) Find the potential difference across each capacitor after they are connected.

V (2 µF capacitor) .

V (6 µF capacitor)

(b) Find the initial and final energy stored in the capacitors.

mJ (initial)

mJ (final)

Solutions

Expert Solution

Charges on each capacitor will be

When the Capacitor will be connected with opposite polarity then, total charge will be

As they connected in parallel hence the charge will distribute among the two in such way so that they have the same potential. Let the charge on is then the charge on will be . Hence,

Hence charge on will be

Potential across each capacitor will be

(2) Initial energy stored in was,

Initial energy stored in was,

final energy stored in was,

Final energy stored in was,

genius_generous answered 1 year ago

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