Answer Happy

(b) Two wires as shown in the figure are separated by d = 8.4 cm and carry currents of I = 5.45 A in opposite directions. Choose the positive direction for the magnetic field to be out of the page and negative into the page. (i) Find the magnitude and direction of the net magnetic field at a point midway between the wires. (7 marks) =- Solution: uolt μ-12 До Bnet = -B1 - B2 = - + (11 + 12) 12πη, '2πη.. 2πη 410 x 10-7 Bnet = (5.45 + 5.45) = -5.2 x 10-5T 27(4.2 x 10-2) Direction is into the page. Question 3 continues → 5 Question 3 continued: (ii) Find the magnitude and direction of the net magnetic field at point P, 8.4 cm to the right of the wire on the right. (7 marks) Solution = 2πη, 2πι, 21 r1 [ Moly Holz Bnet = +B1 – B2 = 41 x 10-7 x 5.45 1 1 Bnet = + = +0.63 x 10-5T 211 X 10-2 16.8) 8.4 Direction is out of the page. K?