How do the charges in 3 cancel each other out in net electrostatic force?

In summary, the question asks about the direction and net electrostatic force of multiple charges on a center charge. The net force is determined by the individual charges' attraction and repulsion, with opposite charges attracting and like charges repelling. The direction of the force can be determined by visualizing a scenario where friends on either side pull and push, with the net force being the sum of all individual forces.
  • #1
Salman Ali
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1
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Here is the question no1 in image. A charge is in between . We will let it possitive or negative. The answer is 3,1,2 4...But how? Won't the charges in 3 cancel each other out because they are possitive at right and negative at left. One is attracting so the other is repelling.
 

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  • #2
Salman Ali said:
One is attracting so the other is repelling.
And what direction is the force that each exerts on the center charge? (Do they add or subtract?)
 
  • #3
Doc Al said:
And what direction is the force that each exerts on the centre charge? (Do they add or subtract?)
if we let the centre charge to be positive then obviously the negative ones will attract it while the positive ones will repel it. Now the question is about the net electrostatic force. See these explanations.
 

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  • #4
Salman Ali said:
if we let the centre charge to be positive then obviously the negative ones will attract it while the positive ones will repel it.
Well, then what is your question?
 
  • #5
Doc Al said:
Well, then what is your question?
I am still not getting it. Can you explain how in 3 the center has the highest net force?
 
  • #6
Figure out the direction of the force that each charge exerts on the center charge.

Imagine this: One friend on your right pulls you toward him while a friend on your left pushes you away. Do those pushes/pulls cancel?
 
  • #7
Doc Al said:
Figure out the direction of the force that each charge exerts on the center charge.

Imagine this: One friend on your right pulls you toward him while a friend on your left pushes you away. Do those pushes/pulls cancel?
Got it bro! Thanks!
 

Related to How do the charges in 3 cancel each other out in net electrostatic force?

1. What is net electrostatic force?

Net electrostatic force is the total force between two charged particles or objects. It takes into account both the magnitude and direction of the electrostatic forces between the particles.

2. How is net electrostatic force calculated?

The net electrostatic force 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. The formula for net electrostatic force is F = k * (q1 * q2) / r^2, where k is the Coulomb's constant, q1 and q2 are the charges of the particles, and r is the distance between them.

3. What is the relationship between net electrostatic force and distance?

The net electrostatic force is inversely proportional to the square of the distance between two charged particles. This means that as the distance between the particles increases, the force between them decreases. Conversely, as the distance decreases, the force increases.

4. How does the magnitude of the charges affect net electrostatic force?

The magnitude of the charges has a direct impact on the net electrostatic force. The greater the magnitude of the charges, the stronger the force between them. For example, two particles with a larger charge will experience a stronger electrostatic force than two particles with a smaller charge at the same distance.

5. What is the unit of measurement for net electrostatic force?

The unit of measurement for net electrostatic force is Newtons (N). This is the standard unit for force in the International System of Units (SI). In some cases, the force may also be measured in dynes (dyn) or pounds-force (lbf).

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