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Core of an atom. The nucleus contains both positive (protons) and neutral (neutrons) subatomic particles. - O
positive charge - A charge that exists in a body that has fewer electrons than protons.
positive feedback - A feedback signal that is in phase with an amplifier input signal. Positive feedback is necessary for oscillation to occur.
positive ground - A system whereby the positive terminal of the source is connected to the system's conducting chassis.
positive ion - Atom that has lost one or more valence electrons resulting in a net positive charge.

Basics
The Basics Electricity is essential not only to life but to every element we know of. It is one of the build blocks of atoms, and that is the best place to start to understand electricity. In case


Current
Electric Current Electrons, while they can flow, do not flow through all materials equally and in some materials not at all. When electrons can move through a material it is said to be a conductor an

Capacitors
Capacitors Despite the huge amount of different capacitors, they all serve the same purpose, to store electrons, like a tiny battery. The basic capacitors work by separating to conductive plates by a

Circuits
Electrical Circuits An electrical circuit is anything that allows current to flow, from a bulb attached to a battery to a desktop calculator. A simple circuit The most basic circuit you can get i

Measuring Electricity
Measuring Electricity The best and cheapest way to measure electrical properties is with a multimeter. If you are planning on playing with electronics it is the first thing you should buy as you will