Electric Force of charges A,B,C on another charge

In summary, the problem involves four point charges with given charges and positions on a straight line. The question asks for the force acting on a fourth charge at a specific position. The equation used to calculate the force is F = k(q1q2)/r^2, where k is a constant, q1 and q2 are the charges of the two interacting charges, and r is the distance between them.
  • #1
RichMarrem
2
0

Homework Statement



A, B and C have charges of -2.6, 8.5, and 7.5 microC respectively. These charges are at the points 2.5, 7 and 2 on a straight line where all distances are measured in millimeters from the zero point. What force does a -7.5 microC charge feel if it is at the point 1.2 mm?

Homework Equations



F = k(q1q2)/r^2

The Attempt at a Solution



I tried making free body diagrams and then using those to make net force equations but I was unsure how to find the force from the equations.
 
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  • #2
What force acts between two point charges? Show your work. ehild
 
Last edited:
  • #3
Would it be F = k(q1q2)/r^2 ?

so between A and the fourth charge,
F = k(2.6*7.5)/(1.3)^2

and so on between B, C and the fourth charge
 

1. What is the electric force of charges A, B, and C on another charge?

The electric force is the attractive or repulsive force that exists between two or more charged particles. The strength of this force is determined by the amount of charge on each particle.

2. How is the electric force between charges calculated?

The electric force between charges can be calculated using Coulomb's Law, which states that the force is directly proportional to the product of the charges and inversely proportional to the square of the distance between them.

3. How does the distance between charges affect the electric force?

The electric force between charges decreases as the distance between them increases. This is because the force is inversely proportional to the square of the distance between the charges.

4. What is the difference between attractive and repulsive electric forces?

An attractive electric force exists between opposite charges, meaning that the charges are of different signs (e.g. positive and negative). A repulsive electric force exists between like charges, meaning that the charges are of the same sign (e.g. positive and positive or negative and negative).

5. How does the presence of multiple charges affect the electric force on a single charge?

If there are multiple charges present, the electric force on a single charge will be the vector sum of the individual forces exerted by each charge. This means that the direction and magnitude of the force will depend on the relative positions and charges of all the particles involved.

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