Question

The figure below shows two wires carrying currents of I = 4.85 A in opposite directions, separated by a distance d. Assume d = 7.7 cm.

The figure below shows two wires carrying currents of I = 4.85 A in opposite directions, separated by a distance d. Assume d 7.7 cm. Р. .-d- (a) Find the magnitude (in pT) and direction of the net magnetic field at a point halfway between the wires. magnitude рт -Select direction (b) Find the magnitude (in pT) and direction of the net magnetic field at point P right 7.7 cm to the right of the wire on the magnitude Рт --Select direction (c) Find the magnitude (in uT) and direction of the net magnetic field at point P2, 2d 15.4 cm to the left of the wire on the left magnitude ит -Select- direction (d) What If? Repeat part (a) for the case where both wires carry currents in the same direction, upward in the fiqure. Find the magnitude (in HT) and direction of the net magnetic field at a point halfway between the wires. рт magnitude Select direction

Answer 1

a) we have given the two long straight wires carrying of current I =4.85A in opposite directions, separated by distance d. By using the right hand thumb rule we can determine the direction of magnetic field.

The magnetic field should be

2 magnitude of Magnetic field (B). - Bohol 2nd Brot & Bit - hot & lot = 217 (42) 2014/2) 2 ho I 215(6/2) مامال Into the page H2itd - 4x44x157x485 24 x 77X16-2 - 8x157x4.85 77x102 ~ 50.4 X1067 ~ 50.4 MT (Into the page) Inward) 2T (20) Bi (Into the page) (magnhede of Magulic field) produced by are 1 Bi - Mo I - 744x107x 4.85 24x px77x102 7 6.3 806 z 6.3 et (Into the me B2 (out of page) or = AX 16 7 x 4.85 ~ 12.6.0 2 2*x 7.78102

Met magnetic field. Bret Bits =) - 6 Butt 12:47 - 6.3ut (out of the page) . Courand) IL 12 to 157 ad Mo - 2x107 IH (out of the page) - Ba loft = holl 215& 215/20 = 2x4.850107 6.3 UT *4387167 63 47 2x7.78102 B2 (Into the page) = lol2 - 1012 210 d 21/3d) - 2x107x485 4.2UT 3x7.7x162 Bret= 6.3MT-4:27 ř 2.1 et out of the page)

B = Leso Bi= lot (Into the page) 217(0/2) Brito I2 (out of the page) zilding (dis same and I1=I2=4.85 A is same BI=B2 are same But in opposite Direction ..
** to determine the direction of magnetic field due to a long straight wire carrying current I we may use the right hand thumb rule " if we hold the straight wire such that the thumb of right hand represents the direction of current flowing, then curl of fingers will give you the direction of magnetic field "

***please also check the calculations once. I actually taken up the quite practical numerical value came out after calculations.

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