Moving Charges and Magnetism

Related Questions

• A proton and an alpha particle are separately projected in a region where a uniform magnetic field exists. Their initial velocities are perpendicular to direction of magnetic field. If both the particles move around magnetic field in circles of equal radii, the ratio of momentum of proton to alpha particle $\left( {\frac{{{P_p}}}{{{P_\alpha }}}} \right)$is

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• A cell is connected between two points of a uniformly thick circular conductor. The magnetic field at the centre of the loop will be(Here ${i_1}$ and ${i_2}$ are the currents flowing in the two parts of the circular conductor of radius $a$ and ${\mu _0}$ has the usual meaning)

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• When a magnetic field is applied in a direction perpendicular to the direction of cathode rays, then their

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• A part of a long wire carrying a current i is bent into a circle of radius r as shown in figure. The net magnetic field at the centreO of the circular loop is

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• PQRS is a square loop made of uniform conducting wire the current enters the loop at P and leaves at S. Then the magnetic field will be

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