By: Mohamedshah • 3 year ago
This is brilliant...lots of help
By: hessy • 3 year ago
Some examples from this set of practice questions
1.
State Coulomb\'s law
Answer: Two point charges in free space or air exert forces on each other. The force is directly proportional to the product of the charges and inversely proportional to the square of the distance between the charges
2.
Coulomb\'s law can be represented mathematically
Answer: k.q1.q2/ F= -------------- r^2
3.
1mC
Answer: mili Coulombs 1cm = 1 x 10^-3 C
4.
1uC
Answer: mirco Couloubs 1uC= 1 x 10^-6 C
5.
1nC
Answer: nano Coulombs 1nc = 1 x 10^-9 C
6.
1pC
Answer: pico Coulombs 1pc = 1 x 10^-12 C
7.
When is an object positively charged?
Answer: And object has a deficiency of electrons if it is positively charged.
8.
When is an object negatively charged?
Answer: An object with an excess of electrons is negatively charged
9.
State the law of conservation of energy
Answer: Charge in an isolated system remains constant, therefore charge cannot be created or destroyed only transfered
10.
What happens when charged objects touch?
Answer: When two charged objects touch each other, electrons move from the more negative object to the more positive object until they have equal charges.
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