# physics-E&M

An infinite line charge of uniform linear charge density lambda = -2.5 micro Coulombs lies parallel to the y axis at x = 0 m. A point charge of 3.5 micro Coulombs is located at x = 2.5 m, y = 3.5 m. Find the x- and y-components of the electric field at x = 3.5 m, y = 3.0 m.

So I get what this is asking; you have to point charges with locations given; what is the charge of the third at another given location. What I'm *not* sure of is what equations/approach to use.

I don't want to throw anyone under the bus (knowledge of the material is my responsibility) but my prof. just kinda mumbles and points at PowerPoint slides with a laser pointer so I don't have anything from my lecture to help with this. Any assistance would be much obliged; thank you in advance.

1. 👍 0
2. 👎 0
3. 👁 570
1. You have the electric field at (3.5,3) due to a line charge.
Then you have the electric field at (3.5,3) due to a point charge

You add those vectorialy to get the total E vector at (3.5,3)
Do that by adding the Ey components due to each
and then the Ey components due to each.
It only asks for those components, not the magnitude and direction.

The E field due to a line charge is in your text.
The E field due to a point charge is in your text.
I will see if I can find something online, but I am sure you have those.

1. 👍 0
2. 👎 0
posted by Damon
2. http://hyperphysics.phy-astr.gsu.edu/hbase/electric/elelin.html

1. 👍 0
2. 👎 0
posted by Damon
3. http://hyperphysics.phy-astr.gsu.edu/hbase/electric/elefie.html

1. 👍 0
2. 👎 0
posted by Damon
4. in both cases we are talking about Coulomb's law E = k Q/r^2

Above I mean find Ex and Ey, not Ey and Ey (typo)

1. 👍 0
2. 👎 0
posted by Damon
5. by the way k = 9*10^9 N m^2/C^2

1. 👍 0
2. 👎 0
posted by Damon

## Similar Questions

1. ### physics E&M

I posted a question on here earlier but I wasn't able to solve from what the person had told me. An infinite line charge of uniform linear charge density lambda = -2.5 micro Coulombs lies parallel to the y axis at x = 0 m. A point

asked by aaron b. (again sorry) on January 27, 2012
2. ### physics

An infinite sheet with a surface charge density of -2.1 micro-coulombs/m2 runs parallel to the x axis. Another infinite sheet a surface charge density of +2.1 micro-coulombs/m2 runs parallel to the y axis. A charge of -4.1

asked by Mandaleigh on February 10, 2012
3. ### physics

A point charge of +10 micro-coulombs lies at x = -0.39 m, y = 0 m, a point charge of -5.7 micro-coulombs lies at x = +0.39 m, y = 0 m, and a point charge of +14.9 micro-coulombs lies at x = 0 m, y = -0.3 m. A point charge of +10

asked by Mandaleigh on February 10, 2012
4. ### Physics

An infinitely long line charge of uniform linear charge density λ = -3.00 µC/m lies parallel to the y axis at x = -2.00 m. A point charge of 4.70 µC is located at x = 1.50 m, y = 2.50 m. Find the electric field at x = 2.50 m, y

asked by Paul on October 9, 2011
5. ### physics 2

A charge of -6.8 micro-Coulombs is placed at x = 0, y = 0. A charge of -18.5 micro-Coulombs is placed at x = 0, y = +37 cm. Another charge of -12.9 micro-Coulombs is placed at x = +17 cm, y = 0 cm. What is the angle the total

asked by Jessica on January 18, 2013
1. ### physics2

A charge of -6.5 micro-Coulombs is placed at the origin of a coordinate system. Another charge of -7.6 micro-Coulombs is placed at x = +0.29 m, y = +0.17 m. A third charge of +14 micro-Coulombs is placed at x = -0.29 m, y = 0 m.

asked by kelly on January 29, 2011
2. ### Physics

An infinitely long line charge of uniform linear charge density λ = -3.00 µC/m lies parallel to the y axis at x = -2.00 m. A point charge of 4.70 µC is located at x = 1.50 m, y = 2.50 m. Find the electric field at x = 2.50 m, y

asked by Tom on October 10, 2011
3. ### physics

A point charge of +4.6 micro-coulombs lies at x = 0 and a point charge of -7.3 micro-coulombs lies at x = +3.3 m. Where on the x axis, is the total electric potential equal to zero? Answer in meters.

asked by Mandaleigh on February 10, 2012
4. ### physics

A sphere has a radius of 0.20 meters and has a uniform surface charge density equal to 6.3 micro coulombs per meter squared. A second point charge has a magnitude of 0.58 micro coulombs and is 0.61 meters away from the center of

asked by doug on March 17, 2012
5. ### physics

Calculate the magnitude and direction of the Coulomb force on each of the three charges connected in series: 1st - 6 micro Coulombs (positive charge) 2nd - 1.5 micro Coulombs (positive charge) 3dr - 2 micro Coulombs (negative

asked by andrew on May 16, 2012

More Similar Questions