What is a Capacitor
- A two terminal electronic component which stores energy in form of charge.
- capacitance is a measure of a capacitor ability to store charge.
- A large capacitance means that more charge can be stored.
- Capacitance is measured in Farads(F) but prefixes like µF and pF for smaller values Conductor that can hold charge.
- For our propose two conductors one with charge + Q and one with charge – Q.
- We “charge” a capacitor by connecting it to a battery
- when we disconnect the battery charge remain on the conductor
if we connect conductor charge will then flow from one to another
Why Are Capacitors Useful ?
- capacitor can provide uniform electric field we use them to accelerate or deflect charged Bheem etc.
- we can store charge for later use we can charge many capacitors and then discharge them at one time to produce very large currents for short time.
- capacitor important in AC circuit
Formula
- We Find that voltage is directly proportional to charge
- Q=Charge
- C=Capactance
- V=Voltage
- Capactance=Q=CV
Type of
Capacitor
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Paper Capacitor
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Mica Capacitor
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Ceramic Capacitor
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Electrolytic Capacitor
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Variable Capacitor
Practical Use
- Used for making timer circuits, when used with resistance.
- Used in clipper, clamper circuit.
- Used for providing instantaneous large power as in flashlight of cameras.
- Used in DC filter circuits.
- Used in Ac circuit also
Video link-https://youtu.be/wHkJqiiFQig
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