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- 1. Multiple Choice
Open the Electrostatics Force Mini Lab http://www.thephysicsaviary.com/Physics/Programs/Labs/ForceElectricMiniLab/index.html in a side by side window (alt[ and alt]) This equation is called Coulomb's Law. Change the value of r. What does r measure?
the distance between the two charged objects
the amount of charge carried by the objects
the amount of force between two charged objects
- 2. Multiple Choice
(On our equation sheet, we use d instead of r.) In this lab, r is measured in cm, which is common because a meter is so big on the the scale of charged objects. Still, though, the Standard International unit of distance is the
meter
inch
- 3. Multiple Choice
In this lab, what does Fe stand for?
electrostatic Force
the symbol for iron
- 4. Multiple Choice
What will be the units of F? (We can just call it F instead of Fe.)
Newtons
meters
Coulombs
- 5. Multiple Choice
As the value of r increases, what happens to the value of F?
F increases
F decreases
F never changes
- 6. Multiple Choice
Increase the value of one of the q's. As q increases, what happens to F?
F increases
F decreases
F never changes
- 7. Multiple Choice
What does q measure?
the distance between the two charged objects
the amount of charge carried by the object
the amount of force between two charged objects
- 8. Multiple Choice
Why are there two q's in the equation?
because there are two objects
because there are protons and electrons
- 9. Multiple Choice
in this lab, q is measured in nC, which is common because a Coulomb is actually a very large amount of charege, so we often see microCoulombs or nC - nanoCoulomb. Still, though, the Standard International unit of CHARGE is the
Coulomb
Newton
Joule
Watt
- 10. Multiple Choice
What can you do to increase the value of k?
increase the Force
increase the distance
decrease the charge
nothing can be done to change the value of k - it is a constant
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