Problem # 3
DATA:
Solution:
The electric potential of a puntual charge is defined as:
The three charges located in equilateral triangle are at the same distance from the p point. The value of is shown in the figure:
Now, applying equation (1) for the three charges we have:
The point "p" is located at the same distance from the charges:
But so:
Replacing values given in DATA we obtain:
Therefore:
Problem # 4
DATA:
Solution:
The Work is defined as:
First, we calculate the electric potential at the point "B". So:
Here, and are the potential of charges and at the point "B". Therefore:
Replacing values given in DATA:
Similarly, we calculate the electric potential :
Replacing values given in DATA:
Therefore, replacing this results in equation (2)
Finally, replacing this result and the value of in equation (1):
The three point charges shown in the figure form an equilateral triangle with sides 4.9 cm...
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solve all parts Three point charges are arranged in a horizontal line as shown below. Find the electric forces (in units of kQ^2/R^2) on the charges given the following: Q_1 = -80 Q, Q_2 = -4 Q, Q_3 = 36 Q, r_1 = 4 R and r_2 = 2 R Remember that a positive force points to the right and a negative force points to the left. What is the net force on charge Q_1? What is the net force...