Moving Charges and Magnetism

Related Questions

• If a copper rod carries a direct current, the magnetic field associated with the current will be

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• A proton, a deuteron and an $\alpha - $particle having the same kinetic energy are moving in circular trajectories in a constant magnetic field. If ${r_p},\,{r_d}$ and ${r_\alpha }$ denote respectively the radii of the trajectories of these particles, then

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• Two ions having masses in the ratio $1 : 1$ and charges $1 : 2$ are projected into uniform magnetic field perpendicular to the field with speeds in the ratio $2 : 3$. The ratio of the radii of circular paths along which the two particles move is

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• A particle carrying a charge equal to 100 times the charge on an electron is rotating per second in a circular path of radius 0.8 metre. The value of the magnetic field produced at the centre will be (${\mu _0} = $ permeability for vacuum)

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• A straight wire carrying a current 10 A is bent into a semicircular arc of radius $5 cm$. The magnitude of magnetic field at the center is

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