Moving Charges and Magnetism

Related Questions

• 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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• A small coil of N turns has an effective area A and carries a current I. It is suspended in a horizontal magnetic field $\vec B$ such that its plane is perpendicular to $\overrightarrow B $. The work done in rotating it by $180^\circ $ about the vertical axis is

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• The magnetic induction at the centre of a current carrying circular of coil radius r, is

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• Two thin, long, parallel wires, separated by a distance ‘d’ carry a current of ‘i’ A in the same direction. They will

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• Two long conductors, separated by a distance d carry current I1 and I2 in the same direction. They exert a force F on each other. Now the current in one of them is increased to two times and its directions is reversed. The distance is also increased to 3d. The new value of the force between them is

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