1 point When a skateboarder is at the top of a 2 meter halfpipe, what can you say
about their energy?
Their potential enrgy is at it's highest
Their kinetic energy is at it's highest
Their potential and kinetic energy are equal
O
Their speed is at it's highest

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.