Hello everyone 'im confused...all these problems keep bringing up how many times a coil turns, and yet the forumla/book doesn't apply the case if its turning or spinning. FOr example, this problem asks: A circular coil of 200 turns has a radius of 2.10 cm. (a) Calculate the current that results in a magnetic dipole moment of 2.30 Am2. A (b) Find the maximum torque that the coil, carrying this current, can experience in a uniform 40.0 mT magnetic field. Nm I know the equation: M = AI; Would i use the area of a circle because its a coil? and why does it tell me it turns 200 times, is it goign to effect the area or current or what?> Also to find the maximum torque, can i use the equation of: T = IAB? where B is the magnetic field, and A is the area nad I is the current?