How is electric potential related to electric potential energy?

AI Thread Summary
Electric potential is defined as the ratio of electric potential energy to electric charge, while electric potential energy is measured in Joules and electric potential in Volts. Multiplying electric potential by mass does not yield potential energy, as this confuses the concepts of electric and gravitational potential. The discussion emphasizes the importance of understanding the dimensional differences between these terms. Dimensional analysis is suggested as a method to clarify the relationship between electric potential and electric potential energy. Understanding these distinctions is crucial for solving related problems in electromagnetism.
Lucy Yeats
Messages
117
Reaction score
0

Homework Statement


I have an expression for electric potential. Can I multiply this by mass to turn it into potential energy?


Homework Equations



W=Fs ?

The Attempt at a Solution

 
Physics news on Phys.org
Electric potential is (potential energy)/(electric charge).

(potential energy)/(mass) is gravitational potential.
 
I honestly don't know anything about eletromagnetism.
I do know that "eletric potential"(measured in Volts) is not the same as "eletric potential energy" (measured in Joules)

So if I understood correctly your problem it looks like it can be solved by dimensional analysis.

Sorry, but I can't help further than that
 
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 'Collision of a bullet on a rod-string system: query'
In this question, I have a question. I am NOT trying to solve it, but it is just a conceptual question. Consider the point on the rod, which connects the string and the rod. My question: just before and after the collision, is ANGULAR momentum CONSERVED about this point? Lets call the point which connects the string and rod as P. Why am I asking this? : it is clear from the scenario that the point of concern, which connects the string and the rod, moves in a circular path due to the string...
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