Static Flashcards
Give an example of a material that is a good electrical insulator.
Rubber. Rubber is an insulator as it tightly binds its electrons, preventing the flow of electric current.
Name an example of a good electrical conductor.
Copper. Copper is a good conductor because it has free electrons that allow the easy flow of electric current.
How can insulating materials be charged?
Insulating materials can be charged by rubbing them together. When insulating materials are rubbed, electrons are transferred, resulting in an electrostatic charge.
What happens to an object when it loses electrons?
It becomes positively charged. Losing electrons leaves an object with a deficiency of negative charge, resulting in a positive charge.
Describe the charge of an object that gains electrons.
It becomes negatively charged. Gaining electrons leads to an excess of negative charge, resulting in a negative charge on the object.
When do forces of attraction occur between charges?
Forces of attraction occur between opposite charges. Opposite charges attract each other due to the movement of electrons.
When do forces of repulsion occur between charges?
Forces of repulsion occur between like charges. Like charges repel each other due to the surplus or deficit of electrons.
In what situations can the potential dangers of electrostatic charges arise?
Potential dangers can arise when fuelling aircraft and tankers. During fuelling, static charges can accumulate, leading to sparks and potential hazards.
Name a device that utilizes electrostatic charges in its operation.
Photocopier or Inkjet printer. Photocopiers use electrostatic charges to attract and transfer toner particles. Inkjet printers use electrically charged droplets for precise image creation.
