Question

QUESTION 22 A horizontal power line of length = 58.0 m carries a current of 1 = 2.20 kA northward as shown in th figure. The Earth's magnetic field at this location has a magnitude of B = 5.00.1051. The field at this location is directed toward the north at an angle = 65.0" below the power tine. Find the magnitude Fand the direction of the magnetic force on the power line. South North F: 2.70 N. into the page. F = 2.70 N out of the page. F = 5.78 N. out of the page. F = 5.78 N. into the page QUESTION 23 In an electric motor, a circular coil with N = 150 turns of radius R = 1.5 cm can rotate between the poles of a magnet which produces magnetic field of magnitude B = 250 mt. What is the current through the coil of the maximum torque that the motor can deliver is 0.0035 Nm? is the torque on the coul clockwise or counterclockwise as viewed from the front at the instant shown in the figure? N 1 = 132 mA. The torque is clockwise 1 = 410 mA The torque is counterclockwise I= 132 mA. The torque is couterclockwise 1:410 mA. The torque is clockwise PIC.COLLAGE

Answer 1

22. i = idu x B = 2.2x10x58x5x10-5 3 sings 25.78 N into the page 23. T = BINA 0.boss I - - BNA 250x10 x 150X (1.5 x 10 ZL x ñ in counter clockwise - 132 MA