Principles of electrical science

[funstur]

Can any body please confirm the formula for calculating the answer to this question. Many thanks

A conductor 300 mm long is placed in and at right angles to a magnetic field with a magnetic flux density of 0.3 tesla. What is the force on the conductor if a current of 36 A is passed through it?

f=mxa

B=Φ/a Φ=Bxa

.09=.3x.3 x 36(I) = 3.25N

 

[Guest55]

and why the hell would you expect electricians to know that crap ?

wire goes in , wire goes out , thats our game.

shove yer fancy pants physics.

;-)

 

[dazza1981]

oh no not phasor diagrams......

 

[Marvo]

Nope just formulas

Force in Neutons = Magnetic flux density in Tesla x Current in Amps x Length in meters (F=BIL)

therefore

Force = 0.3 x 36 x 0.3

Force = 3.24 Neutons

 

[telectrix]

i remember neutons. they're from the planet neut in the 3rd system of the prot galaxy. not very nice race to do business with since the romulans conned them out of 5 trillion zogs.

 

[i=p/u]

I remember covering this, but think only affects larger cables and have to be fastened/secured .. Anyone ever came across it

 

[funstur]

Thanks guys for your input and clarity:clap:

 

[7029 dave]

It's all about the molecular construction of the cross sectional area of the cable to give you an answer.