As shown in the figure, two parallel long straight wires a and B carry currents of the same size and opposite direction, and the magnetic force on a is F1. When a uniform magnetic field perpendicular to the plane of the wire is added, the magnetic force on a becomes F2, and the magnetic force on B becomes () A. F2B. F1-F2C. F1+F2D. 2F1-F2

As shown in the figure, two parallel long straight wires a and B carry currents of the same size and opposite direction, and the magnetic force on a is F1. When a uniform magnetic field perpendicular to the plane of the wire is added, the magnetic force on a becomes F2, and the magnetic force on B becomes () A. F2B. F1-F2C. F1+F2D. 2F1-F2

As shown in the figure, the two long straight lines have the same current magnitude and opposite direction. Then a receives the force of magnetic field generated by B to the left, and the force of magnetic field generated by B to the right is F1 ', and these two forces are equal in magnitude and opposite in direction. When the uniform magnetic field is added, the force of magnetic field generated by a is F0, and then a is

Two parallel long straight wires a and B carry the same steady current in the same direction, and the magnetic field force on wire a is the same

F = bil, direction close to the other conductor

As shown in the figure, two parallel long straight wires a and B carry currents of the same size and opposite direction, and the magnetic force on a is F1. When a uniform magnetic field perpendicular to the plane of the wire is added, the magnetic force on a becomes F2, and the magnetic force on B becomes ()
A. F2B. F1-F2C. F1+F2D. 2F1-F2

As shown in the figure, the two long straight lines have the same current magnitude and opposite direction. Then a receives the force of magnetic field generated by B to the left, and the force of magnetic field generated by B to the right is F1 ', and these two forces are equal in magnitude and opposite in direction. When the uniform magnetic field is added, the force of magnetic field generated by a is F0, and then a is

There are several ways to connect a small light bulb with a battery, a small light bulb and wires

Serial circuit. The bulb can be connected to the positive or negative side of the battery, and then connected to the other end of the battery with a wire