Instructions: Identify the Following

question 39

Essay

Instructions: Identify the following. Be as specific as possible, and include names, dates, and relevant facts as appropriate. Be sure to explain the significance of the person or term.
Mary Harris Jones, United Mine Workers of America

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Definitions:

Electromagnetism

A branch of physics that studies the interaction between electric currents and magnetic fields.

Solenoid

A coil of wire that acts as a magnet when carrying electric current, often used to control a valve or other components by moving a ferromagnetic core.

Relay

An electrical switch that opens and closes circuits electromechanically or electronically, often used for controlling a high-power circuit with a low-power signal.

Deficit of Electrons

A deficit of electrons occurs in an atom or molecule when it has more protons than electrons, resulting in a positive charge, often referred to as an ionized state.