A very long uniform line of charge has a charge per unit length of 4.82 uC/m

AI Thread Summary
The discussion revolves around calculating the net electric field at specific points along the y-axis due to two parallel lines of charge. The first line has a charge density of 4.82 µC/m, while the second has a charge density of -2.46 µC/m. Participants express confusion about how to apply the electric field equations correctly, particularly regarding the integration and the distances involved. Suggestions include reviewing relevant physics resources for guidance on electric fields from continuous charge distributions. The conversation emphasizes the need for clarity in applying formulas to find both the magnitude and direction of the electric field at the specified points.
xxaznitex
Messages
6
Reaction score
0

Homework Statement


A very long uniform line of charge has charge per unit length 4.82 uC/m and lies along the x-axis. A second long uniform line of charge has charge per unit length -2.46 uC/m and is parallel to the x-axis at y1= 0.418
1-)What is the magnitude of the net electric field at point y2= 0.202 m on the y-axis?
2-)What is the direction of the net electric field at point y2= 0.202 m on the y-axis?
-y-axis
+y-axis
3-)What is the magnitude of the net electric field at point y3= 0.608 m on the y-axis?
4-)What is the direction of the net electric field at point y3 = 0.608 m on the y-axis?
-y-axis
+y-axis


Homework Equations



EA=PA/epsilon-nought
E=kq/r2


The Attempt at a Solution



I don't really know where to start.
At first I tried to do E=(k*dq)/r^2 = k(4.82e-6)/(x^2+.202^2)
But then realized that I don't have a definite integral. Then I tried to use E=(kq1/r1)+(kq2/r2)... but the answer was incorrect. Anyone know how to start this problem..?
 
Physics news on Phys.org
Thread 'Variable mass system : water sprayed into a moving container'

Thread 'Variable mass system : water sprayed into a moving container'

Starting with the mass considerations #m(t)# is mass of water #M_{c}# mass of container and #M(t)# mass of total system $$M(t) = M_{C} + m(t)$$ $$\Rightarrow \frac{dM(t)}{dt} = \frac{dm(t)}{dt}$$ $$P_i = Mv + u \, dm$$ $$P_f = (M + dm)(v + dv)$$ $$\Delta P = M \, dv + (v - u) \, dm$$ $$F = \frac{dP}{dt} = M \frac{dv}{dt} + (v - u) \frac{dm}{dt}$$ $$F = u \frac{dm}{dt} = \rho A u^2$$ from conservation of momentum , the cannon recoils with the same force which it applies. $$\quad \frac{dm}{dt}...
View full post »

Thread 'Struggle to understand the concept of the 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

Find the electric field of a long line charge at a radial distance
Replies
1
Views
2K
Net charge contained by a cube in a region with a non-uniform E field
Replies
3
Views
3K
Relativistic charged particle in a constant, uniform EM field
Replies
3
Views
2K
Calculate the electric field due to a line of charge of finite length
Replies
6
Views
4K
Force between two lines of charge?
Replies
9
Views
8K
Energy per unit length of a cylindrical shell of charge
Replies
1
Views
5K
Gauss's Law and Parallel Line Charges
Replies
1
Views
2K
Uniform line of charge and point charge
Replies
5
Views
10K
Charge on a rod of infinite length
Replies
2
Views
2K
Energy density due to infinite uniform line charges
Replies
45
Views
4K

Hot Threads

Recent Insights

Back
Top