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Engineering Electromagnetics 8th Edition Solution Manual | William H. Hayt & John A. Buck | Complete Step-by-Step Answers PDF

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Engineering Electromagnetics with this 8th Edition Solution Manual by William H. Hayt and John A. Buck. This fully converted PDF provides complete step-by-step solutions for all textbook problems, making it an essential study aid for electrical engineering students, professors, and exam preparation. Perfect for homework help, exam review, and understanding complex electromagnetics concepts. Get accurate answers and save study time with this verified manual.

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Uploaded on
January 14, 2026
Number of pages
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Written in
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6/2027,
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CHAPTER 1


1.1. Given the vectors M = −10ax + 4ay − 8az and N = 8ax + 7ay − 2az, find:
a) a unit vector in the direction of −M + 2N.

−M + 2N = 10ax − 4ay + 8az + 16ax + 14ay − 4az = (26, 10, 4)

Thus

a = (26, 10, 4) = (0.92, 0.36, 0.14)

|(26, 10, 4)|



b) the magnitude of 5ax + N − 3M:

(5, 0, 0) + (8, 7, −2) − (−30, 12, −24) = (43, −5, 22), and |(43, −5, 22)| =
48.6.

c) |M||2N|(M + N):

|(−10, 4, −8)||(16, 14, −4)|(−2, 11, −10) = (13.4)(21.6)(−2, 11, −10)

= (−580.5, 3193, −2902)

1.2. Vector A extends from the origin to (1,2,3) and vector B from the origin to
(2,3,-2).

a) Find the unit vector in the direction of (A − B): First

A − B = (ax + 2ay + 3az) − (2ax + 3ay − 2az) = (−ax − ay + 5az)

w√hose magnitude is |A − B| = [(−ax − ay + 5az ) · (−ax − ay + 5az )]1/2


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= 1 + 1 + 25 =
3 3 = 5.20. The unit vector is therefore

aAB = (−ax − ay + 5az)/5.20


b) find the unit vector in the direction of the line extending from the origin to
the midpoint of the line joining the ends of A and B:

The midpoint is located at

Pmp = [1 + (2 − 1)/2, 2 + (3 − 2)/2, 3 + (−2 − 3)/2)] = (1.5, 2.5,
0.5)

The unit vector is then

a = (1.5ax + 2.5ay + 0.5az)
+ + )/2.96
= (1.5a
2.5a 0.5a



mp p x y z
(1.5)2 + (2.5)2 +

(0.5)2




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1.3. The vector from the origin to the point A is— given
− as (6, 2, 4), and the unit

vector directed from the origin toward point B is (2, 2, 1)/3. If points A and B
are ten units apart, find the coordinates of point B.

With A = (6, −2, −4) and B = 1 B(2, −2, 1), we use the fact that |B − A| = 10, or

2 2 31

|(6− 3 B)a−x (2− 3 B)a−y (4 + 3 B)a
| z = 10

Expanding, obtain

36 − 8B + 4 B2 + 4 − 8 B + 4 B2 + 16 + 8 B + 1 B2 = 100
9 3 9 √ 3 9
or B2 − 8B − 44 = 0. Thus B = 8± 64−176
2 = 11.75 (taking positive option) and so

B 2 2 1

= 3 (11.75)ax − 3 (11.75)ay + 3 (11.75)az = 7.83ax − 7.83ay + 3.92az

1.4. circle, centered at the origin with a radius of 2 units, lies in the xy plane.
Determine √the unit

vector in rectangular components that lies in the xy plane, is tangent− to the
circle at ( 3, 1,
0), and is in the general direction of increasing values of y:

A unit vector tangent to this circle in the general increasing y direction is
t = −aφ . Its√x and

y components are tx = −aφ · ax = sin φ, and t√y = −aφ · ay = − cos φ. φ

At the point (−
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Latest update!!!! Engineering electromagnetics solution manuals
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= 150◦, and so t = sin 150◦ax − cos 150◦ay = 0.5(ax + 3ay). 3,
1),


1.5. A vector field is specified as G = 24xyax + 12(x2 + 2)ay + 18z2az. Given two
points, P (1, 2, −1) and Q(−2, 1, 3), find:
a) G at P : G(1, 2, −1) = (48, 36, 18)

b) a unit vector in the direction of G at Q: G(−2, 1, 3) = (−48, 72, 162), so

(−48, 72, 162)
a =G = ( —0 .26, 0. 39
, . 0 88)

|(−48, 72, 162)|

c) a unit vector directed from Q
toward P :

(3 1 4)
a = P − Q = ,− ,
QP
√ = (0.59, 0.20, −0.78)
26
|P − Q|



d) the equation of the surface on which |G| = 60: We write 60 = |(24xy,

12(x2 + 2), 18z2)|, or 10 = |(4xy, 2x2 + 4, 3z2)|, so the equation is

100 = 16x2y2 + 4x4 + 16x2 + 16 + 9z4




1.6. Find the acute angle between the two vectors A = 2ax + ay +− 3az and B = ax
3ay + 2az by using the definition of:

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