Recent content by tarellan

Homework Statement Part of a long wire is bent into a semicircle of radius a, as in the figure . A current I flows in the direction shown. a.)Use the Biot-Savart law to find the magnitude of the magnetic field at the center of the semicircle (point P). b.) Find the direction of the...

Homework Statement can someone please help? I am having major problems with physics right now :( Each of the wires carries a current of magnitude I. The current in wire 1 is directed out of the page and that in wire 2 is directed into the page. The distance between the wires is 2d. The...

Homework Statement The particle moves in a plane perpendicular to the magnetic field direction as shown in the figure. What is omega, the angular frequency of the circular motion? Express omega in terms of q, m, and B_0. Homework Equations omega=2pi/T The Attempt at a...

Homework Statement A parallel-plate capacitor has plates of 10 cm^2 area separated by a 0.10mm layer of glass insulation with resistivity rho = 1.2x10^13 omega*m and dielectric constant k= 5.6. Because of the finite resistivity, current can leak through the insulation. How do I Show...

Homework Statement Obtain an expression for the rate (dV/dt) at which the voltage across a charging capacitor increases. Express your answer in terms of I, R, and C. 2. The attempt at a solution I found that at time=0, dV/dt=EMF/RC