The Poynting vector is the power component that is calculated by the a) Product of E and H b) Ratio of E and H c) Dot product of E and H d) Cross product of E and H

The Poynting vector is the power component that is calculated by the
a) Product of E and H
b) Ratio of E and H
c) Dot product of E and H
d) Cross product of E and H
by

1 Answer

Answer :

d) Cross product of E and H
by

Related questions

he work done of vectors force F and distance d, separated by angle θ can be calculated using, a) Cross product b) Dot product c) Addition of two vectors d) Cannot be calculated

Description : he work done of vectors force F and distance d, separated by angle θ can be calculated using, a) Cross product b) Dot product c) Addition of two vectors d) Cannot be calculated

Last Answer : b) Dot product

The vectors of the electromagnetic wave propagation can be expressed in a) Dot product b) Cross product c) Unit vector d) Perpendicular vector

Description : The vectors of the electromagnetic wave propagation can be expressed in a) Dot product b) Cross product c) Unit vector d) Perpendicular vector

Last Answer : b) Cross product

The distance vector can be used to compute which of the following? a) Dot product b) Cross product c) Unit normal vector d) Area

Description : The distance vector can be used to compute which of the following? a) Dot product b) Cross product c) Unit normal vector d) Area

Last Answer : c) Unit normal vector

The dot product of two vectors is a scalar. The cross product of two vectors is a vector. State True/False. a) True b) Fals

Description : The dot product of two vectors is a scalar. The cross product of two vectors is a vector. State True/False. a) True b) Fals

Last Answer : a) True

Find the power of an EM wave, given that the cross product of the E and H component is 2 + 3j. a) 2 b) 1 c) 4 d) 8

Description : Find the power of an EM wave, given that the cross product of the E and H component is 2 + 3j. a) 2 b) 1 c) 4 d) 8

Last Answer : b) 1

Which of the following statements is true? a) E is the cross product of v and B b) B is the cross product of v and E c) E is the dot product of v and B d) B is the dot product of v and E

Description : Which of the following statements is true? a) E is the cross product of v and B b) B is the cross product of v and E c) E is the dot product of v and B d) B is the dot product of v and E

Last Answer : a) E is the cross product of v and B

Which of the Pythagorean Theorem is valid in Electromagnetics? a) |dot product| + |dot product| = 1 2 2 c) |dot product| + |cross product| = 1 b) |cross product| – |cross product| = 1 d) |dot product| + |cross product| = 0

Description : Which of the Pythagorean Theorem is valid in Electromagnetics? a) |dot product| + |dot product| = 1 2 2 c) |dot product| + |cross product| = 1 b) |cross product| – |cross product| = 1 d) |dot product| + |cross product| = 0

Last Answer : c) |dot product| + |cross product| = 1

Lorentz force is based on, a) Dot product b) Cross product c) Both dot and cross product d) Independent of both

Description : Lorentz force is based on, a) Dot product b) Cross product c) Both dot and cross product d) Independent of both

Last Answer : b) Cross product

Lorentz force is based on, a) Dot product b) Cross product c) Both dot and cross product d) Independent of both

Description : Lorentz force is based on, a) Dot product b) Cross product c) Both dot and cross product d) Independent of both

Last Answer : b) Cross product

When two vectors are perpendicular, their a) Dot product is zero b) Cross product is zero c) Both are zero d) Both are not necessarily zero

Description : When two vectors are perpendicular, their a) Dot product is zero b) Cross product is zero c) Both are zero d) Both are not necessarily zero

Last Answer : Answer: a Explanation: Dot product of two perpendicular vectors is given by A.B = |a||b|cos 90, which is zero. Thus, dot product is zero and vectors are perpendicular.

Using volume integral, which quantity can be calculated? a) area of cube b) area of cuboid c) volume of cube d) distance of vector

Description : Using volume integral, which quantity can be calculated? a) area of cube b) area of cuboid c) volume of cube d) distance of vector

Last Answer : c) volume of cube

Using Maxwell equation which of the following cannot be calculated directly? a) B b) D c) A d) H

Description : Using Maxwell equation which of the following cannot be calculated directly? a) B b) D c) A d) H

Last Answer : c) A

Poynting vector wattmeter is based on

Description : Poynting vector wattmeter is based on   (A) Seebeck effect (B) Ferranti effect (C) Induction effect (D) Hall effect

Last Answer : Poynting vector wattmeter is based on Induction effect 

What does the Poynting vector represent ?

Description : What does the Poynting vector represent ?  (A) Electromagnetic fields (B) Power density (C) Power (D) Energy

Last Answer : The Poynting vector represent  Power density

Poynting vector for an electron Magnetic wave is equal to

Last Answer : Poynting vector for an electron Magnetic wave is equal to E x H.

The power in a wave given that H component is 0.82 units in air. a) 126.74 b) 621.47 c) 216.47 d) 745.62

Description : The power in a wave given that H component is 0.82 units in air. a) 126.74 b) 621.47 c) 216.47 d) 745.62

Last Answer : a) 126.74

The Laplacian of the magnetic vector potential will be a) –μ J b) – μ I c) –μ B d) –μ H

Description : The Laplacian of the magnetic vector potential will be a) –μ J b) – μ I c) –μ B d) –μ H

Last Answer : a) –μ J

The H quantity is analogous to which component in the following? a) B b) D c) E d) V

Description : The H quantity is analogous to which component in the following? a) B b) D c) E d) V

Last Answer : c) E

The normal component of which quantity is always discontinuous at the boundary? a) E b) D c) H d) B

Description : The normal component of which quantity is always discontinuous at the boundary? a) E b) D c) H d) B

Last Answer : b) D

The vector product of two vectors is given by area of the parallelogram. State True/False. a) True b) False

Description : The vector product of two vectors is given by area of the parallelogram. State True/False. a) True b) False

Last Answer : a) True

The skin depth is calculated from the amplitude of the wave. State true/false a) True b) False

Description : The skin depth is calculated from the amplitude of the wave. State true/false a) True b) False

Last Answer : a) True

The benefit of Maxwell equation is that a) Any parameter can be calculated b) Antenna can be designed c) Polarisation of the wave can be calculated d) Transmission line constants can be found

Description : The benefit of Maxwell equation is that a) Any parameter can be calculated b) Antenna can be designed c) Polarisation of the wave can be calculated d) Transmission line constants can be found

Last Answer : a) Any parameter can be calculated

By method of images, the problem can be easily calculated by replacing the boundary with which polygon? a) Rectangle b) Trapezoid c) Square d) Triangle

Description : By method of images, the problem can be easily calculated by replacing the boundary with which polygon? a) Rectangle b) Trapezoid c) Square d) Triangle

Last Answer : d) Triangle

If the electric potential is given, which of the following cannot be calculated? a) Electrostatic energy b) Electric field intensity c) Electric flux density d) Permittivity

Description : If the electric potential is given, which of the following cannot be calculated? a) Electrostatic energy b) Electric field intensity c) Electric flux density d) Permittivity

Last Answer : a) Electrostatic energy

Is the vector is irrotational. E = yz i + xz j + xy k a) Yes b) No

Description : Is the vector is irrotational. E = yz i + xz j + xy k a) Yes b) No

Last Answer : a) Yes

Find whether the vector is solenoidal, E = yz i + xz j + xy k a) Yes, solenoidal b) No, non-solenoidal c) Solenoidal with negative divergence d) Variable divergence

Description : Find whether the vector is solenoidal, E = yz i + xz j + xy k a) Yes, solenoidal b) No, non-solenoidal c) Solenoidal with negative divergence d) Variable divergence

Last Answer : a) Yes, solenoidal

Find the divergence of the vector F= xe -x i + y j – xz k a) (1 – x)(1 + e -x ) b) (x – 1)(1 + e -x ) c) (1 – x)(1 – e) d) (x – 1)(1 – e)

Description : Find the divergence of the vector F= xe -x i + y j – xz k a) (1 – x)(1 + e -x ) b) (x – 1)(1 + e -x ) c) (1 – x)(1 – e) d) (x – 1)(1 – e)

Last Answer : a) (1 – x)(1 + e -x )

The cross product of the vectors 3i + 4j – 5k and –i + j – 2k is, a) 3i – 11j + 7k b) -3i + 11j + 7k c) -3i – 11j – 7k d) -3i + 11j – 7k

Description : The cross product of the vectors 3i + 4j – 5k and –i + j – 2k is, a) 3i – 11j + 7k b) -3i + 11j + 7k c) -3i – 11j – 7k d) -3i + 11j – 7k

Last Answer : Answer: b Explanation: Cross product of two vectors is, A X B = (a2*b3 – b2*a3)i – (a1*b3 – b1*a3)j + (a1*b2 – b1*a2)k. Using the formula, the answer can be calculated.

The work done in the power transmission with E and H given by 50 and 65 respectively. The velocity of propagation is 20m/s. a) 162.5 b) 621.5 c) 562.1 d) 261.5

Description : The work done in the power transmission with E and H given by 50 and 65 respectively. The velocity of propagation is 20m/s. a) 162.5 b) 621.5 c) 562.1 d) 261.5

Last Answer : a) 162.5

Find the power of a wave given that the RMS value of E and H are 6 and 4.5 respectively. a) 24 b) 27 c) 29 d) 32

Description : Find the power of a wave given that the RMS value of E and H are 6 and 4.5 respectively. a) 24 b) 27 c) 29 d) 32

Last Answer : b) 27

The gradient of the magnetic vector potential can be expressed as a) –με dV/dt b) +με dE/dt c) –με dA/dt d) +με dB/dt

Description : The gradient of the magnetic vector potential can be expressed as a) –με dV/dt b) +με dE/dt c) –με dA/dt d) +με dB/dt

Last Answer : a) –με dV/dt

The charge density of a field with a position vector as electric flux density is given by a) 0 b) 1 c) 2 d) 3

Description : The charge density of a field with a position vector as electric flux density is given by a) 0 b) 1 c) 2 d) 3

Last Answer : d) 3

The magnitude of the conduction current density for a magnetic field intensity of a vector yi + zj + xk will be a) 1.414 b) 1.732 c) -1.414 d) -1.732

Description : The magnitude of the conduction current density for a magnetic field intensity of a vector yi + zj + xk will be a) 1.414 b) 1.732 c) -1.414 d) -1.732

Last Answer : b) 1.732

The charge density of a system with the position vector as electric flux density is a) 0 b) 1 c) 2 d) 3

Description : The charge density of a system with the position vector as electric flux density is a) 0 b) 1 c) 2 d) 3

Last Answer : d) 3

Find the magnetic flux density when the vector potential is a position vector. a) 1 b) 0 c) -1 d) ∞

Description : Find the magnetic flux density when the vector potential is a position vector. a) 1 b) 0 c) -1 d) ∞

Last Answer : b) 0

Find the magnetic field when the magnetic vector potential is a unit vector. a) 1 b) -1 c) 0 d) 2

Description : Find the magnetic field when the magnetic vector potential is a unit vector. a) 1 b) -1 c) 0 d) 2

Last Answer : c) 0

The relation between flux density and vector potential is a) B = Curl(A) b) A = Curl(B) c) B = Div(A) d) A = Div(B)

Description : The relation between flux density and vector potential is a) B = Curl(A) b) A = Curl(B) c) B = Div(A) d) A = Div(B)

Last Answer : a) B = Curl(A)

The current element of the magnetic vector potential for a surface current will be a) J dS b) I dL c) K dS d) J dV

Description : The current element of the magnetic vector potential for a surface current will be a) J dS b) I dL c) K dS d) J dV

Last Answer : c) K dS

The magnetic vector potential for a line current will be inversely proportional to a) dL b) I c) J d) R

Description : The magnetic vector potential for a line current will be inversely proportional to a) dL b) I c) J d) R

Last Answer : d) R

Find the vector potential when the field intensity 60x 2 varies from (0,0,0) to (1,0,0). a) 120 b) -20 c) -180 d) 60

Description : Find the vector potential when the field intensity 60x 2 varies from (0,0,0) to (1,0,0). a) 120 b) -20 c) -180 d) 60

Last Answer : b) -20

Given the vector potential is 16 – 12sin y j. Find the field intensity at the origin. a) 28 b) 16 c) 12 d) 4

Description : Given the vector potential is 16 – 12sin y j. Find the field intensity at the origin. a) 28 b) 16 c) 12 d) 4

Last Answer : c) 12

Find the magnetic field intensity when the magnetic vector potential x i + 2y j + 3z k. a) 6 b) -6 c) 0 d) 1

Description : Find the magnetic field intensity when the magnetic vector potential x i + 2y j + 3z k. a) 6 b) -6 c) 0 d) 1

Last Answer : b) -6

The magnetic vector potential is a scalar quantity. a) True b) False

Description : The magnetic vector potential is a scalar quantity. a) True b) False

Last Answer : b) False

Find the magnetic flux density of the material with magnetic vector potential A = y i + z j + x k. a) i + j + k b) –i – j – k c) –i-j d) –i-k

Description : Find the magnetic flux density of the material with magnetic vector potential A = y i + z j + x k. a) i + j + k b) –i – j – k c) –i-j d) –i-k

Last Answer : b) –i – j – k

Calculate the polarisation vector in air when the susceptibility is 5 and electric field is 12 units. a) 3 b) 2 c) 60 d) 2.4

Description : Calculate the polarisation vector in air when the susceptibility is 5 and electric field is 12 units. a) 3 b) 2 c) 60 d) 2.4

Last Answer : c) 60

Calculate the polarisation vector of the material which has 100 dipoles per unit volume in a volume of 2 units. a) 200 b) 50 c) 400 d) 0.02

Description : Calculate the polarisation vector of the material which has 100 dipoles per unit volume in a volume of 2 units. a) 200 b) 50 c) 400 d) 0.02

Last Answer : a) 200

Find the Gauss value for a position vector in Cartesian system from the origin to one unit in three dimensions. a) 0 b) 3 c) -3 d) 1

Description : Find the Gauss value for a position vector in Cartesian system from the origin to one unit in three dimensions. a) 0 b) 3 c) -3 d) 1

Last Answer : b) 3

Find the curl of the vector A = yz i + 4xy j + y k a) xi + j + (4y – z)k b) xi + yj + (z – 4y)k c) i + j + (4y – z)k d) i + yj + (4y – z)k

Description : Find the curl of the vector A = yz i + 4xy j + y k a) xi + j + (4y – z)k b) xi + yj + (z – 4y)k c) i + j + (4y – z)k d) i + yj + (4y – z)k

Last Answer : d) i + yj + (4y – z)k

Find the curl of the vector and state its nature at (1,1,-0.2) F = 30 i + 2xy j + 5xz 2 k a) √4.01 b) √4.02 c) √4.03 d) √4.04

Description : Find the curl of the vector and state its nature at (1,1,-0.2) F = 30 i + 2xy j + 5xz 2 k a) √4.01 b) √4.02 c) √4.03 d) √4.04

Last Answer : d) √4.04

The curl of a curl of a vector gives a a) Scalar b) Vector c) Zero value d) Non zero value

Description : The curl of a curl of a vector gives a a) Scalar b) Vector c) Zero value d) Non zero value

Last Answer : b) Vector