EMF Homework Help: Calculating Resultant Force on a Square with Charges Q and q

In summary, the question is asking for the value of Q in terms of q when the force on Q is null due to the presence of two charges on the opposite corners of a square and two charges on the remaining vertices. The value of Q can be found by equating the resultant forces of the repulsive and attractive forces acting on Q, which is achieved when Q and q have opposite signs. The distance between Q and Q can be found by equating the resultant force of the two attractive forces with the repulsive force. Therefore, Q = -q is the correct relation between the two charges.
  • #1
viciado123
54
0
A charge Q at a vertex of a square and another Q on the opposite corner of the square and other two charges q each of the other vertices. If the force eletrogmanetica on Q is null which the value of Q in terms of q? There is a q such that the resultant force on 4 charges is zero?

My attemp

F = (K.Q.Q)/r^2 + (K.Q.q)/r^2
F = 0
KQ^2 + KQq = 0
Q(KQ + kq) = 0
Q = - q

If q = 0 the resultant force is 0

I correct ?
 
Physics news on Phys.org
  • #2


If the side of the square is r, the length of the diagonal is ...?
At Q three forces are acting. How are they related to get net zero force?
 
  • #3


rl.bhat said:
If the side of the square is r, the length of the diagonal is ...?
At Q three forces are acting. How are they related to get net zero force?

This is my doubt
 
  • #4


To get net zero force on Q, Q and q must have opposite sign.
On charge Q, one repulsive force between Q and Q, and two attractive forces between Q and q are acting. What is the distance between Q and Q?
Equate the resultant force of two attractive with the repulsive force to find the relation between Q and q.
 
  • #5


rl.bhat said:
To get net zero force on Q, Q and q must have opposite sign.
On charge Q, one repulsive force between Q and Q, and two attractive forces between Q and q are acting. What is the distance between Q and Q?
Equate the resultant force of two attractive with the repulsive force to find the relation between Q and q.

Yes I find Q = -q is correct ?
 

FAQ: EMF Homework Help: Calculating Resultant Force on a Square with Charges Q and q

What is EMF and why is it important?

EMF stands for electromagnetic field, which is a type of energy that is produced by electrically charged particles. This type of energy is important because it plays a major role in many aspects of our daily lives, including technology, communication, and transportation.

How does EMF impact our health?

There is ongoing research on the potential health effects of EMF exposure. Some studies have suggested that high levels of EMF exposure may increase the risk of certain health issues, such as cancer and neurological disorders. However, the overall consensus is that the levels of EMF exposure from common electronic devices are not harmful to human health.

What are the sources of EMF?

The main sources of EMF are power lines, electrical appliances, and wireless communication devices such as cell phones, Wi-Fi routers, and Bluetooth devices. Natural sources of EMF include the Earth's magnetic field and solar radiation.

How can I protect myself from EMF exposure?

There are several steps you can take to reduce your exposure to EMF. These include using a hands-free device for your cell phone, keeping your distance from high EMF sources such as power lines, and limiting your use of electronic devices. It is also important to follow safety guidelines when using electronic devices and to avoid using them near your body while sleeping.

Are there any regulations for EMF exposure?

Yes, there are regulations in place to limit the amount of EMF exposure in certain settings, such as workplaces and public spaces. These regulations are based on scientific research and aim to protect individuals from excessive EMF exposure. However, it is important to note that these regulations may vary by country and may not cover all sources of EMF.

Similar threads

Why is source force + electrostatic force = 0 inside battery?
Replies
10
Views
974
Electromagnetic force on particles forming a square
Replies
5
Views
2K
Minimizing the Energy of Two Conductors Very Far Apart
Replies
23
Views
1K
What is the induced magnetic force on this closed current loop?
Replies
12
Views
1K
Coulomb's Law and 4 point charges
Replies
12
Views
3K
Electric force calculate the separation
Replies
3
Views
1K
Force of one distribution of charge on another
Replies
9
Views
1K
Calculating the number of electrons given the force of repulsion
Replies
5
Views
3K
Net force acting on a charged particle ##+Q##
Replies
9
Views
2K
Velocity of a particle kicked into four point charge square
Replies
1
Views
5K

Hot Threads

Recent Insights

Back
Top