Magnetic flux Puns

Given two parallel conductors with current flowing through them (I1= I2= 5 A). Calculate all angles of the triangle between the point P and the conductors 1 and 2 with the cosine theorem (a = 5 cm, b = 4 cm, c = 5 cm).

Determine the magnetic field strength H at point P (graphical solution). Then calculate the magnetic field strength H and the magnitude of the magnetic flux density B at point P.

I did already calculate:

Angle on P and I2 = 66.42 degrees each

Angle on I1 = 47.15 degrees

I don't understand how you get the value on the magnetic field strength H and the magnetic flux densitry B.

1. This is part of the worksheet <-- Worksheet with results that should be coming out in the end.

2. Tried this formula already and it didn't work

3. This formula didn't do the trick either

The distance between I2 and the y-axis should be about 3.4 cm and the distance between I1 and the y-axis should be about 1.6 cm according to my calculations.

Thank you!

https://preview.redd.it/iy8s8sa26j781.png?width=1812&format=png&auto=webp&s=680756c6d49e5b1e83b3802c6778fbf8fc16b897

Hi there, I'm stuck on this MCQ. The answer is A, can someone please explain why? Thanks

Let's imagine I have a coil of wire and a magnetic field is passing through it (the field going into the page).

I have read that if you move the coil of wire to the right, such that the coil leaves the field, it will experience a change in magnetic flux.

But magnetic flux is defined as the product of the magnetic field strength and the area of the loop. The area of the loop isn't changing (I'm not making the loop bigger); the field strength isn't changing because it is uniform.

So how can there be a change in magnetic flux?

Edit: Could the area be changing as it leaves the field?

Edit: Sample question based on this concept: https://ibb.co/sPgJC7X

First of all sorry for my bad english, and thanks if you asnwer my doubt, the question is how can I describe the magnetic flux of a spire that spins with w = pi/2 (x direction), that is in a constant magnetic field (x direction) but only in z>0. The spire is a semicircumference of radius R.

Im having trouble cause it must be some kind of function that repeats in (0,2pi) but im quite stucked.

Picture attached for better understanding.

https://preview.redd.it/5e419lm0jc681.jpg?width=1280&format=pjpg&auto=webp&s=876247deb6fa0e5ba6e04e40cf77542c546d240f

I just used a magnetic screwdriver on my HDD, and now is won't boot. Please help, I didn't back anything up.

Many sources online define flux in terms of flux density, and flux density in terms of flux. Weber is the Unit for flux, and Tesla is for flux density. An explanation of how to calculate flux without flux density being known would be appreciated.

I was reading this chapter on magnetisation, and found myself very confused with understanding the difference between B and H and also what significance each of them hold. I tried to Google and also YouTube, but it's somehow confusing me even more.

It would be helpful if someone could explain the difference between them in detail, and with some examples is possible.

Thank you in advance!

I didn't get satisfactory answers the last time I posted the question, so I am posting it again but with a few more detail on what explanation I am seeking and where some of the doubts arise from

I was reading this chapter on magnetisation, and found myself very confused with understanding the difference between B and H and also what significance each of them hold. I tried to Google and also YouTube, but it's somehow confusing me even more.

It would be helpful if someone could explain the difference between them in detail, and with some examples is possible. I am looking for a simple mathematical, visual and physical difference between the two (without drawing any parallel to the electric fields). Which of these describes the strength of the magnetic field? Why do you need two different quantities if they are just proportional to each other by a constant mu ( magnetic permeability)?

And along those lines, if the magnetic susceptibility X is defined as the ratio of how much the material is magnetised by how much the external field is capable of magnetising it, then why don't we use B (if that represents the actual strength of the field)?

Thank you in advance!

I'm confuse, the formula is Φ=A.B.Cosθ right? And the θ is the angle between the area and magnetic field. So why is Cos and not Sen? The max flux is when the angle is 90º isn't? Since more "lines" of the magnetic field will be passing in the area, but cos90°=0 doesn't?. I'm not understending, what I'm thinking wrong? (Sorry If the english is bad, I'm not fluent yet)

I'm trying to understand the joule thief circuit. there are two inductors oppositely wound. it would.make sense if the current through the primary to the transistor base allows current through the secondary which would cancel out the primary, shutting off the transistor.

am I understanding this correctly?

This is sort of a homework question and sort of a general question. One of my electromag field hw questions is that if a certain current is applied in a coil around a toroid, can a magnetic flux be induced in a non-magnetic material? I believe that it would depend on the material (ex. plastic vs aluminum) but I also believe that there would be no flux because of the non magnetic material.

I would think someone like Ørsted or Maxwell would make for a better namesake. In fact, according to Wikipedia, both of those people had units named after them, in a system that has since been superseded by the SI. So I guess the question is, when the SI was developed, why were those names dropped, and why was Tesla added?

Like when our body goes through MRI , current would arbitrarily be produced in different parts of our brain which should cause random movement of limbs and many such effects but it doesn't why?

Link:
     https://www.sportchek.ca/categories/sho … =333206283
Discount:
    25
Retailer:
    Sport Chek

A very popular deal that will run out quickly. These were hot reseller items last time. I expect the same this time around.

They also have the FLUX 2 available for $975 + Tax after FF21MAY.

https://www.sportchek.ca/categories/sho … =333206286

If you want one, buy now think later!!

Link:
    https://www.sportchek.ca/categories/sho … =333206283

Does accelerating electrons increase current? I know I = dQ/dt, but since electrons have negative Q, I was wondering if current should decrease.

Also, does increasing the current increase the (magnetic) flux? Would it suffice to say that since B(dot)ds = mu_0*I, an increase in I increases B, which increases the flux?

A quick question from a pro am welder (part of my job), what are the causes of Arc Blow.

Arc blow to me is the when arc decides to flare out of one side of the rod.

Not when trying to weld near a magnet, that is arc gtfo to me

https://preview.redd.it/k8e13x4hpg481.png?width=501&format=png&auto=webp&s=bc5cd036dac7d3d99c98bb305d685c26acf24e22