10 Questions
What is the key observation made by the ancient Greeks about the material called amber?
Amber can attract small pieces of dust after being rubbed with a piece of animal fur.
What is the term used to describe the effect observed when a comb is placed near bits of paper after combing dry hair?
Electrostatics
What is the relationship between the charges on the plastic rods and the glass rods after they are rubbed against their respective materials?
The plastic rods and glass rods acquire opposite types of charge, and they attract each other.
What is the law of electrostatics that describes the relationship between like and opposite charges?
Like charges repel, and opposite charges attract.
What is the convention used to describe the two kinds of electric charge, as suggested by Benjamin Franklin?
Positive and negative
What is the value of the elementary charge e according to the text?
$1.60 \times 10^{-19}$ C
What determines whether an atom is electrically neutral or charged?
The relative number of protons and electrons
What is the SI unit for electric charge according to the text?
Coulomb
What is the relationship between the charges of two objects according to the text?
Two positively charged objects repel each other, while a positively and a negatively charged object attract each other.
What is the second property of electric charge?
Electric charge is quantized.
Learn about the ancient Greek observation of amber attracting dust and how materials can become charged by rubbing. Explore a simple experiment involving a comb and bits of paper to observe electric charge effects.
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