A.30uf capacitor is connected to 9.0v battery what is the charge on the playe of the compacitor

The relationship between the capacitance, the charge on the capacitor and the potential difference applied across its plates is

where C is the capacitance, Q is the charge and V is the potential difference.

In our problem,  and , so if we re-arrange the previous formula we can find the charge stored in the capacitor:

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