710 Two bar magnets with their north poles have strength Qml

7.10 Two bar magnets with their north poles have strength Qml = 20 A • m and

Qm2 = 10 A • m (magnetic charges) are placed inside a volume as shown in Figure 7.25.

The magnetic flux leaving the volume is

(a) 200 Wb

(b) 30 Wb

(c) 10 Wb

(d) OWb

(e) -lOWb

can someone please explain his step by step please

Solution

Answer : 0 Wb

Pole strength = ability to radiate flux. And

Flux radiate at north pole and converge at south pole

Therefore flux from 10 A.m north pole converge at 20A.m south pole . similarly flux from 20A.m north pole converge at south pole of 10A.m. and there is no flux radiated out of the given volume .