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