(8%) Problem 3: An electric current I = 0.55 A is moving in a circular wire with radius R - 0.055 m. ds R O Otheexpertta.com ed ed * 25% Part (a) Express the magnetic field vector B generated at the center O in terms of the current /, the radius vector R, and the length element vector ds. B Holds x R X Attempts Remain Feedback: is available. * 25% Part (b) What's the direction of the magnetic field at point O? Upward. X Attempts Remain Feedback: is available. D 4 25% Part (c) Express the magnitude of the magnetic field at point O in terms of / and R. Grade Summary B= Deductions 0%