Okay so in the above image the semi circular loop is rotated and a sector of it is introduced into the magnetic field.
I know the magnetic field is constant so no non conservative electric fields will be induced in the loop. Therefore, the charges must accumulate somewhere and create difference in potentials. Where will the high and low potential points be?
Emf is only induced when the area of a current carrying loop increases. In the above figure the part of loop inside the current carrying wire is not a complete circuit (The two vertical lines are not wires). Why is an emf induced?