electromagnetic forces

by poojarao
Tags: electromagnetic, forces
 P: 15 Speed = distance/time and current = charge/time. Explain how F=BIl is actually the same equation as F= Bqv but considered for many charges in a group? can someone please explain with working out please? thanks
 P: 1,133 Lets say that you had a wire with a length l. Lets say that traveling through that length is a net charge q, with an average velocity of v. v = distance/time, in which in this case, v = l/t. The current is I = charge/time = q/t. Therefore, F = B*q*(l/t) = B*(q/t)*l = BIl.
 P: 15 thanks a lot!
P: 4,667

electromagnetic forces

For clarity, these two equations (part of the Lorentz Force Law) are written as

F = l(I x B) = q(v x B)

where x indicates the cross product. meaning that the vectors F,I and B; or F,v,and B are all mutually orthogonal.
 PF Patron Sci Advisor P: 1,717 The I/v vectors need not be orthogonal with the B vector.

 Related Discussions Classical Physics 1 General Physics 1 Classical Physics 2 Classical Physics 1 Introductory Physics Homework 3