Moving Charges and Magnetism

Related Questions

• 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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• A current of 0.1 A circulates around a coil of 100 turns and having a radius equal to 5cm. The magnetic field set up at the centre of the coil is ($\mu_0 = 4\pi \times 10^{–7}$ weber/amp-metre)

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• An electron moving in a circular orbit of radius r makes n rotation per second. The magnetic field produced at the centre has a magnitude of

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• In the figure, shown the magnetic induction at the centre of there arc due to the current in portion AB will be

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• What should be the current in a circular coil of radius $5 cm$ to annul ${B_H} = 5 \times {10^{ - 5}}T$

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