What formula would calculate the total inductance of inductors in series?

LT = L1 + L2

The inductors in a series work like one big inductor, since electrons must pass each one. Thus, all inductors contribute to the total inductance cumulatively.

For more info, please see Electronics Area site for the article on Series and Parallel Inductors – Series & Parallel equivalent inductance

Also, see Electronics Tutorials site for the article on Inductors in Series

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Good conductors with minimum resistance have what type of electrons?

Many free electrons.

For more info, please see All About Circuits site for the article on Conductors, Insulators, and Electron Flow

Also, see YouTube video, excellent, from the Engineering Mindset channel, called How ELECTRICITY works - working principle

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Which of the 4 groups of metals listed below are the best low-resistance conductors?

Gold, silver, and copper.

For the table of conductivity, please see Thought Co site for the article on
Electrical Conductivity of Metals

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What is the purpose of a bypass capacitor?

It removes alternating current by providing a low impedance path to ground.

The bypass capacitor sends AC current to the ground. This helps to achieve a cleaner DC signal, as the shortening of AC current helps to remove AC noise.

For more info, please see Learning About Electronics site, for article on What is a Bypass Capacitor?

Also, see Components 101 site for the article on Decoupling Capacitors and Bypass Capacitors – Working, Applications and Differences

And, Electronics Hub site for the article on What is a Bypass Capacitor? Tutorial | Applications

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How would you calculate the total capacitance of three capacitors in parallel?

CT = C1 + C2 + C3.

The capacitors (two metal plates) in parallel work as if there was only one capacitor, since electrons pass each one separately.

For more info, please see Electronics Area site for the article on Capacitors in Series – Capacitors in Parallel

Also, see Robot Platform site, for the article on Combining Capacitors

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How might you reduce the inductance of an antenna coil?

Reduce the number of turns.

The fewer the turns the less coil, so less ability to perform, as in inductance.

For more info, please see W8JI site, for the article on Inductors and Loading Coil Current (Mobile and Coil Loaded Antennas) How Does an Inductor or Loading Coil Work?

Also, see Wikipedia's article Loading Coil

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