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Define the SI unit of charge
C
Define Electrostatic Force
The forces of attraction and repulsion between protons and electrons
Differentiate between attraction and repulsion
Like charges repel
Unlike charges attract
State the Atomic Theory on Charge
When materials are rubbed together, atoms are rubbed together - negative charge is removed from one material and gained by the other
What happens to a positively charged body according to the atomic theory on charge?
Loses negatives
What happens to a negatively charged body according to the atomic theory on charge?
Gains negatives
What happens to an uncharged body according to the atomic theory on charge?
Has equal amounts of negative and positive charge
Demonstrate Forces Between Electric Charges • Repulsion • 1
Rub 2 polythene rods with a wool cloth
Place one to hang off a retort stand
Demonstrate Forces Between Electric Charges • Repulsion • 2
Rods repel eachother when near
Like charges repel
Demonstrate Forces Between Electric Charges • Attraction • 1
Rub a polythene rod and a perspex rod with a wool cloth
Place one to hang off a retort stand
Demonstrate Forces Between Electric Charges • Attraction • 2
Rods attract eachother when near
Unlike charges attract