Recent content by Ripperbat

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Homework Statement A rod of dielectric material is spun about it's axis with angular velocity \omega. A uniform magnetic field B exists in a direction along the axis of the bar. Determine a charge distribution which produces the same electric field as does the rotating rod. The electric...

Homework Statement A telephone wire of diameter 1mm is suspended 10m above the ground. Estimate its capacitance to Earth per unit length Homework Equations The Attempt at a Solution I've tried to solve the problem by using the formula for a cylindrical capacitor and got the answer...

Homework Statement Two very long thin wires carrying equal and opposite currents of 103 A are placed parallel to the x-axis at y=0 and z=+-0.5. Calculte the magnetic field B in the x-y plane and determine it's maximum gradient.Homework Equations I'm having serious trouble understanding the...

So what they mean by isolating the circuit from the battery is that it still remains a closed circuit, hence we have to take both capacitors into account when solving this?

Homework Statement Two identical capacitors are connected in parallel, charged by a battery ov Voltage V, and then isolated from the battery. One of the capacitors is then filled with a material of relative permittivety E. Homework Equations What is the final potential difference...