Moving Charges and Magnetism

Related Questions

• In the figure shown there are two semicircles of radii ${r_1}$ and ${r_2}$ in which a current i is flowing. The magnetic induction at the centre O will be

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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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• A solenoid of 1.5 metre length and 4.0 cm diameter posses 10 turn per cm. A current of 5 ampere is flowing through it. The magnetic induction at axis inside the solenoid is

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• The coil of a galvanometer consists of 100 turns and effective area of 1 square cm. The restoring couple is ${10^{ - 8}}\,N - m/radian$. The magnetic field between the pole pieces is 5 T. The current sensitivity of this galvanometer will be

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• In a hydrogen atom, an electron moves in a circular orbit of radius $5.2 \times {10^{ - 11}}\,m$ and produces a magnetic induction of $12.56 T$ at its nucleus. The current produced by the motion of the electron will be (Given ${\mu _0} = 4\pi \times {10^{ - 7}}\,Wb/A - m)$

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