In which region is it possible for electric potential = 0?

AI Thread Summary
The discussion centers on finding regions where the electric potential equals zero between two charges: a 4μC positive charge and a -2μC negative charge, which are 0.01m apart. The electric potential due to a point charge is given by the equation V = kQ/r, where k is a constant, Q is the charge, and r is the distance from the charge. The potential from multiple charges can be combined by summing their individual potentials. The key to solving the problem lies in identifying the points along the line connecting the charges where the total potential from both charges cancels out to zero. Understanding these principles is essential for determining the regions of zero electric potential.
pinkie9211
Messages
2
Reaction score
0
Two charges that are shown:
I (4uC) II (-2uC) III
In which regions all the line connecting the charges is it possible for the electric potential to be zero?

1. Homework Statement
They are 0.01m apart

Homework Equations

The Attempt at a Solution


I understand that the 4uC charge and the -2uC charge are going to attract...but I have no idea where the potential could be equal to zero.
 
Physics news on Phys.org
Hint:
What is the equation for the electric potential of a point charge?
What si the rule for combining electric potentials?
 
V= kQ/r

and I'm not sure...
 
Indeed ##V(\vec r)=kQ/r## for a point charge ##Q## at the origin.
If you have two or more charges, then the electric potentials add up.
 

Thread 'Errors and significant figures'

I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
View full post »
Thread 'A cylinder connected to a hanging mass'

Thread 'A cylinder connected to a hanging mass'

Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
View full post »

Similar threads

Electric Potential Energy of Point Charge Systems
Replies
2
Views
885
Earthing of two parallel conducting plates
Replies
11
Views
1K
Capacitors, equipotentials, and electric fields
Replies
5
Views
895
Ion moving through electric potential difference and magnetic field
Replies
8
Views
1K
Potential and Electric Field near a Charged CD Disk
Replies
2
Views
2K
Why Is Work Positive When Done Against the Electric Field?
Replies
22
Views
3K
Polarities of capacitor plates in a complex circuit
Replies
14
Views
2K
Minimizing the Energy of Two Conductors Very Far Apart
Replies
23
Views
1K
Electrical Potential Energy and Potential
Replies
2
Views
1K
Charge on inner/outer surfaces of two large parallel conducting plates
Replies
11
Views
2K

Hot Threads

Recent Insights

Back
Top