4 Questions
What is the purpose of a capacitor in an electrical circuit?
To store and release electrical energy
Which factor determines the capacitance of a capacitor?
The surface area of the capacitor plates and the distance between them
What is the function of an inductor in an electrical circuit?
To oppose changes in the current flowing through it
How does the inductance of an inductor change if the number of turns in the coil increases?
The inductance increases
Study Notes
Capacitors
- A capacitor stores energy in an electric field when a voltage is applied across it.
- The capacitance of a capacitor is determined by the surface area of the plates, the distance between them, and the type of dielectric material used.
Inductors
- An inductor stores energy in a magnetic field when a current flows through it.
- The primary function of an inductor in an electrical circuit is to oppose changes in current.
- If the number of turns in the coil of an inductor increases, the inductance of the inductor also increases, as the magnetic field around the coil becomes stronger.
Test your knowledge about the purpose of capacitors and inductors in electrical circuits, factors determining capacitance, and the functions of inductors. Explore how inductance changes with the number of turns in the coil.
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