Answer:
And the force of ( Attraction or repulsion) between the poles A and D ( maximum or minimum)
Without a bulb energy cant go through and it would be an open circuit blocking the energy from coming out.
It must be the same force, because when it is applied, it is 'distributed' equally in each of the points (either a tendon or a wire or a rope or something similar). The 128N resistance should be preserved for tendons that have the same diameter.
Therefore the correct answer is A.
