Basic Electricity Question. Needs Checking ?

  • Thread starter Thread starter cheechnchong
  • Start date Start date
  • Tags Tags
    Electricity
AI Thread Summary
To equalize the charges of a plate with -3.0 µC and a rod with +2.0 µC, a transfer of 2.0 µC is needed. The calculation shows that this requires moving approximately 1.25 x 10^19 electrons from the plate to the rod. However, there is a noted error in the charge-to-electron conversion factor used in the initial attempt. The discussion highlights confusion regarding the wording of the problem. Overall, the solution approach is correct, but the calculations require verification.
cheechnchong
Messages
132
Reaction score
1
Basic Electricity Question. Needs Checking!??

Homework Statement



A plate carries a charge of -3.0 uC, while a rod carries a charge of +2.0 uC. How many electrons must be transferred from the plate to the rod, so that both objects have the same charge?


The Attempt at a Solution



-2.0 uC / -1.6 x 10^-10 = 1.25 x 10^19 electrons

The wording of this question kinda throws me off. appreciate the help!
 
Physics news on Phys.org
Your number of 2C is the correct charge, but there is an error in your charge/electron number. Otherwise you are doing it correctly.
 
Oh, and post moved from Advanced Physics to Intro Physics.
 

Thread 'Rolling without slipping on a curved surface'

Kindly see the attached pdf. My attempt to solve it, is in it. I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction. I'm not able to figure out, why my solution is wrong, if it is wrong .
View full post »

Thread 'Struggling to understand the concept of this question (ice cube in water optics question)'

TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
View full post »

Similar threads

Electric Potential slowing a charged particle to a stop
Replies
4
Views
3K
Confused about direction of electric field
Replies
7
Views
3K
External Forces and Potential Difference
Replies
8
Views
3K
Calculating Charge of an Electron w/ the Millikan Oil Drop Experiment
Replies
12
Views
2K
Need help with an Electric Field Question
Replies
1
Views
917
Basic Electricity Question - Potential Electric
Replies
6
Views
9K
What is the energy density of the electric field ?
Replies
1
Views
3K
Calculating Charge Transfer between Objects
Replies
3
Views
2K
Electric Potential Difference during thunder storm
Replies
12
Views
5K
Calculating the magnitude of an electric field
Replies
10
Views
2K

Hot Threads

Recent Insights

Back
Top