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Questions and Answers
What is the source of the word 'electricity'?
What is the source of the word 'electricity'?
- The Sanskrit word for amber, elektrika
- The Arabic word for amber, al-elektrik
- The Latin word for amber, electrum
- The Greek word for amber, ἤλεκτρον (ḗlektron) (correct)
What law describes the forces between electric charges?
What law describes the forces between electric charges?
- Newton's law
- Ohm's law
- Coulomb's law (correct)
- Faraday's law
What phenomenon is an example of electrostatic forces at work?
What phenomenon is an example of electrostatic forces at work?
- The repulsion of magnets
- The attraction of plastic wrap to one's hand (correct)
- The expansion of a metal due to heat
- The heating of a wire due to electric current
At what scale do electrostatic forces play a large role?
At what scale do electrostatic forces play a large role?
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How much stronger is the force between an electron and a proton compared to the gravitational force acting between them?
How much stronger is the force between an electron and a proton compared to the gravitational force acting between them?
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