Short difinitions for

1, capacitive reactance
2, inductive reactance
3, impedance
3, Resonance

1. Capacitive reactance: The opposition a capacitor gives to alternating current due to the storage of electric charge.

2. Inductive reactance: The opposition an inductor gives to alternating current due to the back EMF generated by the change in current flow.

3. Impedance: The total opposition to the flow of alternating current in a circuit, consisting of resistance, inductive reactance, and capacitive reactance.

4. Resonance: The condition in a circuit when the inductive and capacitive reactances cancel each other out, leading to a maximum flow of current at a particular frequency.