Purpose: To construct a graphical & mathematical model that describes the relationship electircal forces, the distance between two charged objects and the charge of two objects
Apparatus:
Procedure:
Part I
Indepedent Variable(charge) Depedent variable(force) parameter
(displacement)
1. Measure the force of the two objects
2.Change the charge on the two objects, making sure to keep the
charge on the two objects the same
3.Repeat
Part II
Indepedent variable(displacement) Depedent variable(force) parameter
(charge)
1. Measure the force of the two objects
2.Change displacement between the two objects
3.Repeat
Data
Part1
| Charge (C) | Force (N) |
| 0.25 | 6.243e7 |
| 1 | 9.989e8 |
| 1.5 | 2.248e9 |
| 1.75 | 3.059e9 |
| 2.25 | 5.057e9 |
| 3 | 8.99e9 |
| 3.5 | 1.224e10 |
| 4 | 1.598e10 |
Part II
| *x (m) | Force (N) |
| 0.5 | 3.596e10 |
| 1 | 8.99e9 |
| 1.5 | 3.996e9 |
| 2 | 2.248e9 |
| 2.5 | 1.438e9 |
| 3 | 9.989e8 |
| 3.5 | 7.339e8 |
| 4 | 5.616e8 |
Evaluation of Data:
Part I
F(N)=9.98*109(N/C) * q2(C^2)+282308(N)
As q increases, force increases. Force is directly related to
q^2
PartII
F(N)=8.99*109(N*m^2) *X-2(m^-2)+37090(N)
As X increases, F decreases. F is inversly proportional to x^2