A square loop of side 20 cm and resistance 1$\Omega$ is moved towards right with a constant speed v0. The right arm of the loop is in a uniform magnetic field of 5T. The field is perpendicular to the plane of the loop and is going into it. The loop is connected to a network of resistors each of value 4$\Omega$. What should be the value of v0 so that a steady current of 2 mA flows in the loop?

Question

A square loop of side 20 cm and resistance 1$\Omega$ is moved towards right with a constant speed v₀. The right arm of the loop is in a uniform magnetic field of 5T. The field is perpendicular to the plane of the loop and is going into it. The loop is connected to a network of resistors each of value 4$\Omega$. What should be the value of v₀ so that a steady current of 2 mA flows in the loop?

1 m/s

1 cm/s

10² m/s

10^$-$2 cm/s

Solution

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