Recent content by scholio

ohhh, so basically i am just solving maxwell's eq, so do i just use the net length on the attachment i came up with and just multiply it by mu_0 = 4pi*10^-7, to get the answer I'm looking for?

oh so magnetic flux = [integral(BdA)] where B is magnetic field, dA is change in area in part a, the area does not change, correct? so dA = 0, thus magnetic flux is zero, correct? you mention that the flux is changing, I'm confused, could you explain further? if flux is changing, i need to use...

Homework Statement a single loop is placed deep within a 4 meter long solenoid having a total number of turns equal to 40000. the loop has an area od 0.01m^2 and it carries a current of 20 ampere. the loop is oriented so that the torque on the loop is a maximum with a magnitude of pi*10^-4...

since for part a, the length of the square is given to be 3cm, than the area would be 9cm^2, or 0.09m^2. if i use " V = (A)dB/dt" ---> V = 0.09(0.3)/dt is this what you mean? how do i get time, is it related to the frequency i found in the original post?

oh you a right, that equation was right in front of me, must've forgotten. F = qvB sin(theta) --> find theta 2*10^-6 = (3*10^-6)(10)(0.3i -0.4j) sin(theta) sin(theta) = (2*10^-6)/(9*10^-6i - 1.2*10^-5j) theta = inverse sine [(2*10^-6)/(9*10^-6i - 1.2*10^-5j)] theta = inverse...

the determinant trick involves matrices correct? i think i know how to do that, could you explain the right hand rule a little more, having a little trouble visualizing.

calef, i think you may be right, i think i should actually be solving for [integral(Bdl)] as opposed to [integral(BdI)]. even still, i may have written/used the wrong terms on the attachment to indicate path length, i used radii. anyways, did i determine the path length correctly? i used simple...

couldn't edit the original post, i am supposed to get " mu_0(I) " for the final answer, where mu_0 is a constant = 4pi*10^-7, and I is the current(a constant) *******problem is to solve [integral(Bdl)] not [integral(BdI)], path length not current --> thanks calef/mindscrape

couldn't edit original post, i am supposed to get -24B_0i + 12B_0j

Homework Statement a 3 microcoulomb charge having a speed of 10m/s is fired into a region of constant magnetic field where B is given by: B = 0.3i - 0.4j a) the magnitude force on the charge is found to be 2*10^-6 Newtons. what is the angle between v and B? b) if the direction of v is...

Homework Statement a single square loop of high resistivity wire ( rho = 10^-6 ohm-meters) is placed in a constant magnetic field B of 0.3 Teslas and oriented so that the axis of rotation of the loop is perpendicular to B and in the plane of the loop. the loop rotates with an angular frequency...

Homework Statement three infinitely long straight wires are arranged in a plane as shown at the left. what is the magnetic field vector at point A(see attach.)? all wires carry current I Homework Equations F = IL X B where x indicates cross product, I is current, L is length, B is...

Homework Statement a 0.2 meter straight piece of wire has a current of 30 ampere flowing through it, pointing in the +z direction. the magnetic field presented in space is given by: B = 2B_0i + 4B_0j + 3B_0k what is the force on the wire? Homework Equations magnetic force on a...

how do you know that positive charges pile up on the right side of the wire? isn't the magnetic force qv X B = qvBsin(theta), not qvB or are you assuming theta = 90 degrees? so since E = vB ---> V = EL (which equation is this?) --> V = vBL where V = 98 volts, B = 4 Teslas, L = 0.3 meters, then...

Homework Statement an infinite wire carries current into the paper as shown. (see attach.) compute [integral(B dI)] along the closed path indicated Homework Equations electric potential V = IR where I is current, R is resistance magnetic field B = mu_0(I)/2pi(r) = mu_0(I)/dr where mu_0 is...