Recent content by tarellan

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    How Does a Semicircular Wire Affect Magnetic Field Direction and Magnitude?

    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...
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    Magnetic field from two wires and magnitude

    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...
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    Charge moving in cyclotron orbit

    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...
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    Parallel plate capacitor and insulating material

    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...
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    How Does dV/dt Vary in a Charging Capacitor?

    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
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