10 Questions
What makes carbon the most suitable material for a rubbing connection with commutators or slip rings?
Its self-lubricating quality
What is the overall charge of an atom that has gained an electron?
Negative ion
In a liquid, what moves in opposite directions?
Positively charged ions and Negatively charged ions
Which type of solution is able to conduct electricity most strongly?
Strong acids
What type of substances are known as electrolytes?
Ionic substances
Which type of solution is unable to conduct electricity?
Pure water (distilled)
What is the main reason that makes a material a good conductor of electricity?
Having 1-3 electrons in the outer shell
What happens when a positive force is applied to a copper atom?
The valence electron is drawn away, leaving the atom positively charged
How do insulators affect the flow of electrons?
They stop the flow of electrons
What characteristic of copper makes it the most commonly used conductor?
Being abundantly available in nature and Having only one valence electron
Test your knowledge on the electrical resistivity of pure metals and carbon as a conductor. Explore the significance of carbon in rubbing connections with copper-based commutators and slip rings.
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