Question

Problem 32.43 _ 24 of 147 What is the magnetic field at point 1? The two insulated wires in (Figure 1) cross at a 30° angle but do not make electrical contact. Each wire carries a 5.0 A current. Points 1 and 2 are each 3.7 cm from the intersection and equally distant from both wires. Express your answer using two significant figures. Enter your answer as positive if the magnetic field is directed into the page and as negative if the magnetic field is directed out of the page. O 3) ? 19AO A Bu = – 5.6•10-5 HT Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining Figure < 1 of 1 > Part B What is the magnetic field at point 2? 5.0 A Express your answer using two significant figures. Enter your answer as positive if the magnetic field is directed into the page and as negative if the magnetic field is directed out of the page. 5.0 A 1 A+ O'S) ? B2 = B2= Submit Request Answer

Answer 1

A) The magnetic field due to the two wires at point 1 is, B_1 = 2 (mu _0 I/2 pi d) = 2 (mu_0 I/2 pi d) = mu_0 I/pi d = (4 pi times 10^-7) (5.0)/pi (0.037) = 5.4 times 10^-5 T = 54 times 10^-6 T = 54 mu T The direction of the magnetic field is out of the page B) According to the right hand rule the field due to current in first wire is directed out of the page and field due to second wire is directed in to the page at point 2 = B_2 = (mu_0 I/2 pi d) - (mu_0 I/2 pi d) = 0T