Capacitors
- Created by: henryj
- Created on: 18-02-14 11:35
View mindmap
- Capacitors
- Defintion
- A capacitor is two plates on a circuit separated by an insulator
- Capacitance
- Defined as the amount of charge stored per volt
- Store Energy
- E= 1/2 CV^2
- E=1/2 QV
- Time Constant
- T= RC
- Time taken for the charge on a discharging capacitor to fall to 37% or the charging capacitor to rise to 63%
- Time taken to charge or discharge depends on two factors
- Capacitance
- This affects the amount of charge that can be transferred at a given voltage
- Resistance
- This affects the current in the circuit
- Capacitance
- When connected to a battery a current flows until capacitor is fully charged
- Defintion
Comments
No comments have yet been made