Capacitance

• A capacitor consists of two conductive plates separated by an insulator.
• Capacitance is the charge per unit potential difference
• A Capacitor stores energy in its electric field by transferring charge from one plate to the other
• A dielectric can be added between two plates to increase the capacitance
• Insulators reduce current flow with minimal loss of energy
• When a potential difference is applied to a capacitor, it’s plates aquire equal and opposite charge
• When a capacitor is charged, the potential difference across it increases at a decreasing rate
• When a capacitor is charged, the current across it decreases at a decreasing rate
• When a capacitor is discharged, the potential difference decreases at a decreasing rate
• When a capacitor is discharged, the current increases at a decreasing rate
• A capacitor’s time constant is the resistance x capacitance