A 95 N force is exerted at the end of a 0.50 m long torque wrench gives rise to a torque of 15 N. m. What is the angle between the wrench handle and the direction of the applied force

gets less

be subject to a force andchange its motion

the answer is the first electromagnet (a). this is because it has more coils around the ferromagnetic material. increasing the number of coils increases the surface area in which the metal interacts with the current in the coil. this enables more atoms in the metal to become aligned hence becoming more magnetized.