Recent content by ElectricJosh

Ah, that's a nice reference manual that might save me some tedious calculations. Thanks :)

Thanks for your replies. My intention is not to build a robot, I used that video to illustrate the cylinder arrangement that I want. Sorry I did not make that clear. OK, I've done some calculations and with 200N on a cylinder with a inner diameter of 0.05m and length of 0.1m will give a...

Hi All, I am trying to displace mechanical power using a hydraulic system with the fluid as the energy conduit. I will be using two cylinders with a connecting pipe, so when I push one down the other rises. This video illustrates well what I am going for in terms of hydraulic topology. My...

Hey Guys, thanks for responding. Conservation of momentum is what I was primarily concerned about. So there is a reaction force that acts on the object that generated the field. The two charges example makes sense, but where would the reaction force act on a magnetic field generated by a coil...

Hello, I have been wondering this for a while and have only recently thought to ask here. The Lorentz force is the interaction of a moving charge in a magnetic field, it doesn't seem to have any sort of physical force applied to it, only the magnetic interaction. I was wondering, if there is...

Ah ok thanks, so I could just divide E by the permittivity of free space to find the value of D to put into amperes law?

Thanks for your reply that helps a lot :) Just one question, If E = V/L is E the electric field in a vacuum, hence do I have to covert it to D using the permittivity of free space constant?

Hello, I am trying to create a decent magnetic field in an inductor, I come from an electronics background so I am not a master physicist (I might use this knowledge later if I build an radio system or transformer). I have been studying Maxwell's equations, more specifically Amperes law...

Thanks for your reply. I typed in your questions in google and I found a website that explains the relationship quite well. http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/solenoid.html

Hello, I am looking into magnetic flux density in coils can anyone tell me if there is a general equation that equates flux density to the electric current, the coil's dimensions and number of turns? Any help would be appreciated. Thanks.