Question

1. There are two straight and parallel wires, separated by a distance D. In the first the current is i, while in the others it is 2i; both in the same sense. At what distance from the first wire will the magnetic field between the wires be zero?

2. A cable that is 5 meters above the ground has a current of 100 A. Determine the magnetic field at ground level.

3. An airplane flies at 200m / s in a direction perpendicular to the Earth's magnetic field B = 10^-4T. From end to end of its wings, the plane measures 40 meters. Determine the voltage produced between these points.

4. There is a current of 1 A along a straight conductor. At what distance from the conductor can a magnetic field of 10^-4 T be measured?

5. There is a rectangular loop of 10 cm by 20 cm in a uniform magnetic field that varies in time according to B = 2t² with B in teslas and t in seconds. At the instant t = 2 sec, the voltage induced in the loop is

6. We have a 10cm square loop of wire perpendicular to a magnetic field of 0.2 T. If the field disappears in 0.01 seconds, how much is the average voltage induced in the loop?

7. The area of ​​a 100 turn coil is 10^-2 m². Initially there is a magnetic field in the axis of the coil of 10^-1T, which disappears after one (1) second. If during that second the average current induced in the coil is 10^-2 A, we can assure that the resistance devla coil is of

8. If you change the magnetic field that goes through a closed loop of wire, what happens?

9. The interaction between two charged particles depends on the magnitude of the charges, the distance between them, and what else?

10. What determines whether a magnetic field exerts force on a particle? describe that force

11. (a) An ion moves describing a circular path of radius R in a region with magnetic field B. If the velocity of the particle doubles, the radius of the orbit would be.

11.(b) and if the magnetic field doubles, the radius of the orbit would be

Answer 1

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