Static Electricity and Friction | GCSE Physics Practice
Static electricity is the build-up of electric charge on the surface of an insulator.
Why does hair stand up after rubbing it with a balloon?
What is Static Electricity and Friction | Practice?
"An imbalance of electric charges within or on the surface of a material, created by friction between insulators."
What is the unit of electrical resistance?
Misconception: When a circuit is closed, the 'spent' current returns to the battery.
Calculate the charge flow if a 3A current flows for 10 seconds.
Current is the rate of flow of ____.
Static Shocks
Friction between two insulators transfers electrons from one to the other.
The material that gains electrons becomes negatively charged.
The material that loses electrons becomes positively charged.
Like charges repel; opposite charges attract.
Safety Fact: Sparks occur when the potential difference between the object and the earth is high enough to ionise the air.
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