Question

A wire of 1.0 m length carries the current I1 = 25 A. Another wire of the same length, parallel to the first one carries the current I2 = 15 A. As a result, the wires attract each other with the force F = 1.5 mN. What is the distance between the wires? Are the currents of the same or opposite directions?

What of the following statements is/are correct?

A. The current in one wire create electric field, which exerts a force on the second wire with the current;

B. The current in one wire create magnetic field, which excerts a force on the second wire with the current;

C. The force between the wires is inverse-proportional to the distance between wires;

D. The force between the wires is inverse-proportional to the squared distance between wires;

E. A and D;

F. B and C.

Answer 1

fix = magnetic force between two wives - Mobila 2nd d=distance between the wires d= Mo I, Iz xL = 411X10?x25x15x1 m at x 1.5 X10-3 RTF d=0.05m If current in both are in same direction then both wises will attract each other If current in opposite direction, then both will repel each other. Therefore, custents are in same direction (2) FR = (Bil) = (MotiIzL 27d het nga magnetic field created by one wire which eneste force om other carrying current wire → Moli22L and fax face in inversely proportional to the deitame teksten them Hence, it and c are correct