Moving Charges and Magnetism

Related Questions

• A current of 5 ampere is flowing in a wire of length 1.5 metres. A force of 7.5 N acts on it when it is placed in a uniform magnetic field of 2 Tesla. The angle between the magnetic field and the direction of the current is

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• A long wire A carries a current of 10 amp. Another long wire B, Which is parallel to A and separated by 0.1m from A, carries a current of 5 amp, in the opposite direction to that in A. what is the magnitude and nature of the force experienced per unit length of B$({\mu _0} = 4\pi \times {10^{ - 7}}\,weber/amp{\rm{ - }}m)$

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• The ratio of the magnetic field at the centre of a current carrying coil of the radius a and at a distance ‘a’ from centre of the coil and perpendicular to the axis of coil is

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• The magnetic field at the centre of a circular coil of radius r carrying current $I$ is${B_1}$. The field at the centre of another coil of radius $2r$ carrying same current $I$ is${B_2}$. The ratio $\frac{{{B_1}}}{{{B_2}}}$ is

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• If the strength of the magnetic field produced 10cm away from a infinitely long straight conductor is ${10^{ - 5}}\,Weber/{m^2}$, the value of the current flowing in the conductor will be

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