1. A DC power line for a light-rail system carries 950 A at an angle of 33° to the Earth’s 5.00 × 10-5 T magnetic field. What is the magnitude of the force (in N) on a 125 m section of this line?
1. A DC power line for a light-rail system carries 950 A at an angle of 33° to the Earth’s 5.00 × 10-5 T magnetic field.
What is the magnitude of the force (in N) on a 125 m section of this line?
2. Consider a 150 turn square loop of wire 15.5 cm on a side that carries a 56 A current in a 1.6 T field.
What is the maximum torque on the loop of wire in N⋅m?
What is the magnitude of the torque in N⋅m when the angle between the field and the normal to the plane of the loop θ is 14°?
3. Consider two two long, straight, parallel, current-carrying wires, separated by a distance d = 4.5 cm, as shown in the figure. The left wire is directed out of the page with current I1, and the right wire is directed into the page with current I2. The point P is a distance d from both wires, so the wires and the point form an equilateral triangle.
If both wires are carrying a current of 3.5 A, what is the magnitude of the magnetic field, in teslas, at point P?
If the current from the left wire is 3.5 A and the current from the right is 13.5 A, what is the magnitude of the magnetic field, in teslas, at point P?
Trending now
This is a popular solution!
Step by step
Solved in 4 steps
