Potential difference charge and Energy - Equation

AI Thread Summary
The discussion revolves around calculating the charge transferred during a lightning bolt, given a potential difference of 13 MV and an energy release of 1.3 GJ. The user initially seeks help with unit conversions and the relevant equation connecting energy (E), potential difference (V), and charge (q). They express uncertainty about the formula needed for their calculations. Ultimately, the user indicates they have resolved their question. The thread highlights the importance of understanding the relationship between voltage, energy, and charge in physics.
pat666
Messages
703
Reaction score
0

Homework Statement


If the potential difference between a cloud and the ground is about 13MV , how much charge is transferred in a lightning bolt that releases 1.3GJ of energy?


Homework Equations





The Attempt at a Solution



1st can someone check my conversion - P.d=13*10^6V and E=13*10^9J
The main problem I have is that I don't know the equation relating E, P.V and q or if it exists... can someone please give me a hand... thanks
 
Physics news on Phys.org
Don't worry - solved
 

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

Minimizing the Energy of Two Conductors Very Far Apart
Replies
23
Views
1K
Why do we have a charge in the denominator of equation for voltage?
Replies
2
Views
1K
Velocity of two masses due to electric potential energy
Replies
3
Views
2K
Potential energy of a system of two punctual charges along the X axis
Replies
7
Views
1K
Van der Graaf Generator: Charge, Potential and Redesign Questions
Replies
8
Views
2K
Equation connecting potential and potential energy of a distribution
Replies
5
Views
1K
External Forces and Potential Difference
Replies
8
Views
3K
Electric Potential Difference during thunder storm
Replies
12
Views
5K
A charge q approaching two stationary charges q1 and q2
Replies
7
Views
885
Understand Electric Potential Energy, Difference & Potential
Replies
2
Views
2K

Hot Threads

Recent Insights

Back
Top