Question

In the image, three very close parallel wires each carrying a current. The magnitude of the current in the first wire 11 = 10 (A) and second wire 12 = 14 (A) and their directions are shown with black arrows in the image. The value of current I, and its direction are unknown. The magnetic field B due to all three wires at point P which is 4 (m) away from wires is 4 X107 (T) with the direction of "coming out of the page" at point P. A) Using Amperes law, find the magnitude of the net enclosed current lendi B) Find the magnitude of the current 13 C) Show the direction of current 1, (in the image) 1,=? 4 (m) Coming out of page 1,= 10 (A) 1, = 14 (A)

Answer 1

34 35 36 37 MARCH 12= 14 A 09 10 I3 Luu 4m 11 10A = 1 to 12 01 02 B. dl 03 lui tgorta (A) from Ampere's law l Fenclosed houd B. 2000 ll Penelosed OY llo I enclosed 2H 20m x I enclosed 20 x 4 04 072 05 06 * 4x10 7 40 x 107 x Penclosed 8 A Notes: Penclosed onust Penclosed be towards pril 1, because forom Right hand thumb rule wif hold the current carrying wire with right hand with we

21 22 23 24 25 26 27 28 29 30 2119 20 21 22 23 24 25 22 26 27 29 30 31 in the Shown by BIS our right tood thumb direction of current magnet netic field curling fingers. Lout coming of the page. in a I enclosed is lowards hi 8 = 10-14 + Iz -4 & Iz or, Iz - 12 A shown in the diagrame 8 = Iz is is shouting