Question

Consider the three-legged magnetic circuit in the figure, fabricated with a homogeneous iron core and a uniform cross-sectional area. With the coil energized, the magnetic flux in Leg A is 30 x 10 webers (Wb). Assuming linear magnetic properties, the approximate flux (Wb) in Leg C is most nearly.

A. 05×10-3
B. 0.75 x 10-3 C. 1.0 x 10
D. 2.0x101

Answer 1

Assuming no magnetic flux leakage and a linear magnetic circuit, the flux in Leg C would be approximately the same as the flux in Leg A, which is 30 x 10^-3 webers (Wb).

Step-by-step explanation:

To determine the approximate magnetic flux in Leg C of a three-legged magnetic circuit with linear magnetic properties, where the flux in Leg A is 30 x 10-3 webers (Wb), we can apply the principle of magnetic flux conservation in a closed magnetic circuit.

Assuming the core is homogeneous and the magnetic circuit is linear (i.e., it follows a linear B-H relationship), the magnetic flux will be the same in all parts of the magnetic circuit that are not interrupted by an air gap or other material. Thus, if we can neglect leakage and fringing effects, and if there are no other sources or sinks of magnetic flux, the flux in Leg C will be approximately equal to the flux in Leg A.

Therefore, the approximate flux in Leg C would be the same as in Leg A, which is 30 x 10-3 webers (Wb).