34. How can you confirm that the battery is a DC power supply? 35. Move your compass around the electromagnet. 36. What appears to be creating the magnetic field being represented here ... the battery or the loops? How do you know ? 37. Is the LEFT side of the electromagnet the North end or the South end ? How do you know? 38. Click "Show Field Meter " in the right menu Show Field 39. Move the field meter around the electromagnet. 40. Does the field strength INCREASE Of DECREASE as you move the meter CLOSER to the electromagnet? 41. Place the field meter about one inch from the LEFT side of the electromagnet. DC AC