Here is the question: Some motors must be able to switch directions, sometimes spinning clockwise and other times counter-clockwise. For example, the motor in a VCR must fast forward and rewind videotape. In these situations, explain which type of motor is the best choice. Could someone please help me understand? Everyone is saying it's DC, but I don't understand why.
A motor of either type has 2 wires. If an a.c. type motor, it matters not which way round you connect the a.c. supply to the motor: it will always spin the same way. A d.c. motor will reverse its direction of rotation if the wires are switched over.
