Find the magnetic field (positive magnitude only, no direction) at point P. I = 11.4 A P I2 = 7.50 A 0.831 m 1.22 m

The magnetic field shown in the figure below has a uniform magnitude of 28.0 mT directed into the paper. The initial diameter of the kink is 2.00 cm. x x A. X X x x x x Need Help? X x x xxx x x xx x x x ---Select--- x x x x x x 2.00 cm x x x X x x xxx X B XX x x i (a) The wire is quickly pulled taut, and the kink shrinks to a diameter of zero in 51.0 ms. Determine the average voltage induced between endpoints A and B. Include the polarity. magnitude mV polarity x x x x (b) Suppose the kink is undisturbed, but the magnetic field increases to 104 mT in 4.35 × 10-³ s. Determine the average voltage across terminals A and B, including polarity, during this period. magnitude mV/ polarity ---Select--- A is positive relative to B. B is positive relative to A. The voltage is zero.