Uniform electric field. Find the potential difference

AI Thread Summary
To find the potential difference Va-Vb between points A and B in a uniform electric field E=(4i+3j) N/C, the relationship between electric field and potential must be understood. The potential difference can be calculated using the formula ΔV = -∫E·dl, where dl is the differential displacement along the path from A to B. The uniform field implies that the potential difference is dependent only on the coordinates of points A and B. The discussion emphasizes the need to relate the electric field to the potential energy required to move a charge within that field. Understanding this relationship is crucial for solving the problem effectively.
Bearbull24.5
Messages
50
Reaction score
0

Homework Statement


Point A (2,3)m and point B (5,7)m are in a region where electric field is uniform and given by E=(4i+3j)N/C. What is potential diff Va-Vb?


Homework Equations


Not a clue


The Attempt at a Solution



I tried converting the (4i+3j) into magnitude and that is as far as I got. Not a clue what to do next
 
Physics news on Phys.org
Bearbull24.5 said:

Homework Statement


Point A (2,3)m and point B (5,7)m are in a region where electric field is uniform and given by E=(4i+3j)N/C. What is potential diff Va-Vb?


Homework Equations


Not a clue


The Attempt at a Solution



I tried converting the (4i+3j) into magnitude and that is as far as I got. Not a clue what to do next
How is the electric field related to the potential?
 
Isnt the potential the energy required to move a charge in an electric field?
 
Bearbull24.5 said:
Isnt the potential the energy required to move a charge in an electric field?
It is indeed. So how does that relate to your problem?
 
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...
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...
Back
Top