10 Questions
What happens to the electrons in a conductor with no voltage applied?
They drift away from the nuclei but do not flow in any one direction.
Who discovered superconductivity in 1911?
Heike Kamerlingh Onnes
What is the main function of a resistor in an electric circuit?
To limit the amount of current that flows through it
How is resistance typically measured?
In Ohms (Ω)
What type of materials are commonly used to make resistors?
Wire-round and Carbon-composition
What happens to the resistance in a circuit if components are added in a series?
The resistance increases
What is the function of a variable resistor or rheostat in a circuit?
It changes the current flow gradually
According to Ohm's law, what is the relationship between current and voltage?
Current is directly proportional to voltage
What happens to the brightness of light bulbs in a series circuit if an extra bulb is added?
The bulbs get dimmer
What characteristic is shared by flowing water and flowing electricity as mentioned in the text?
Both experience resistance in their paths
Learn about the characteristics of insulators, conductors with no voltage applied, conductors with voltage applied, and superconductors. Discover the resistance levels and behavior of electrons in each type of material.
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