Capacitors and basics of parallel plate .pptx

Basics of parallel plate capacitor

1. Capacitors A passive electronic component that stores electrical charge. During charging, a capacitor charges until its voltage equals the applied voltage. Charging process is not instantaneous, it occur exponentially over time, characterized by time constant RC.

2. Charging Discharging In an RC circuit, the RC time constant (τ), denoted by the Greek letter tau, is the time it takes for a capacitor to charge to approximately 63.2% of its final value or discharge to approximately 36.8% of its initial value. It's calculated as the product of the resistance (R) and capacitance (C) of the circuit: τ = RC At first, it is easy to store charge. But as more charge is stored, it becomes difficult to place more charge due to coulombic repulsion During discharging, the coulombic repulsion pushes the charges stored out.