Questions and Answers
Who coined the term 'electricity'?
William Gilbert
Thales of Miletus was a Greek mathematician who is associated with static electricity.
True
What discovery is Stephen Gray credited with?
Benjamin Franklin conducted his famous ______ experiment in 1752.
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What invention is Alessandro Volta known for?
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Who discovered the magnetic field created by an electric current?
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Who was the American inventor associated with the telegraph?
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Thomas Edison is known for his contribution to the development of the electric motor.
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Study Notes
History of Electricity
- Thales of Miletus (around 600 BCE) was a Greek mathematician recognized for his work with static electricity.
- William Gilbert (around 1600) coined the term "electricity," deriving it from "electricus" meaning "of amber."
- Otto von Guericke built the first electric generator producing static electricity.
Early Contributions to Electricity
- Stephen Gray (1729) discovered that electricity can flow, distinguishing between conductors and nonconductors.
- Edward George von Kleist and Pieter van Musschenbroek invented the Leyden jar in 1746, the first device to store static electricity.
- Luigi Galvani (1786) proposed that electricity is released when frog's legs touched a current-carrying wire.
Significant Inventors and their Inventions
- Alessandro Volta created the electric battery in the early 1800s, developing the Voltaic pile.
- Hans Christian Ørsted (1820) discovered magnetic fields are influenced by electric currents.
- André-Marie Ampère observed that a coil of wire behaves like a magnet when an electric current flows through it (1820).
Key Theorists and Practical Innovators
- Georg Simon Ohm formulated Ohm's Law in 1826, establishing a relationship between current, voltage, and resistance.
- Michael Faraday created the first crude electric motor and generator (1831) based on electromagnetism.
- Samuel Morse developed the idea of sending coded messages over wires using the electromagnetic telegraph.
Later Developments
- Charles de Coulomb was the first to measure electricity and magnetism relationships.
- Thomas Edison and Joseph Swan developed practical electric light bulbs independently in 1879, influencing later developments in electric lighting.
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Description
Explore the rich history and foundational principles of electricity in this quiz covering Units 1 and 2. From ancient inventors to modern concepts, test your knowledge on electrical theories, measurements, and properties of resistors. Perfect for students looking to enhance their understanding of electrical engineering.
