Calculate Electron Flow in 3 Secs

  • Thread starter Thread starter mp252
  • Start date Start date
  • Tags Tags
    Charge Electron
AI Thread Summary
To calculate the number of electrons leaving the battery's negative terminal in 3 seconds with a current of 2 A, first recognize that 1 Ampere equals 1 Coulomb per second. Therefore, in 3 seconds, the total charge is 2 A x 3 s = 6 Coulombs. Given that the charge of a single electron is approximately 1.602 x 10^-19 C, the number of electrons can be calculated by dividing the total charge by the charge of one electron. This results in approximately 3.75 x 10^19 electrons leaving the battery in that time frame. Understanding these principles is crucial for accurately calculating electron flow in electrical circuits.
mp252
Messages
8
Reaction score
0
i was stuck on this equation if a current of 2 A flows through a lamp when it is connected by copper wire of cross-sectional area 1 mm2 to the terminals of a battery. how many electrons will leave the negative terminal of the battery in 3 seconds? (obiviously the charge of electrons is e=1.602*10–19 C.
 
Physics news on Phys.org
What is the definition of an ampere in terms of coulombs and seconds?
 
1a=1c/1s
 
mp252 said:
1a=1c/1s
Right. An Ampere is one Coulomb of charge per second. How many electrons make up one Coulomb?
 

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

Mechanisms Involved When Charging a Battery
Replies
10
Views
1K
Find the drift speed of electrons in a wire
Replies
2
Views
2K
Understanding Fundamentals of Electronics: Solving an Electric Charge Problem
Replies
11
Views
2K
Why do the headlights on the car become dim when the car is starting?
Replies
4
Views
2K
Electron between two parallel plates
Replies
6
Views
3K
What factors determine wattage of electrons flowing through a wire?
Replies
8
Views
1K
What is the charge of the 10 billion electrons?
Replies
20
Views
3K
Capacitor charging: Where do extra electrons come from?
Replies
3
Views
757
B How is surface charge accumulated?
Replies
36
Views
6K
A copper wire contains 3.0 *10 ^ 22 number of charges on 1 meter wire
Replies
8
Views
1K

Hot Threads

Recent Insights

Back
Top