Electromagnetics Set 24

Electrical Engineering

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This set of Electromagnetics Multiple Choice Questions & Answers (MCQs) focuses on Electromagnetics Set 24

Q1 | Find the potential of V = 60sin θ/r2 at P(3,60,25)
  • 5.774
  • 6.774
  • 7.774
  • 8.774
Answer: 5.774
Q2 | ,1,3).
  • 105
  • 106
  • 107
  • 108
Answer: 106
Q3 | What is the potential difference between 10sinθcosφ/r2 at A(1,30,20) and B(4,90,60)?
  • 2.386
  • 3.386
  • 4.386
  • 5.386
Answer: 4.386
Q4 | m from the ring.
  • 18π
  • 24π
  • 36π
  • 72π
Answer: 72π
Q5 | at R = 4m and σ = -3 at R = 5m. Find the flux density at R = 1m.
  • 0
  • 1
  • 2
  • 3
Answer: 0
Q6 | at R = 4m and σ = -3 at R = 5m. Find the flux density at R = 3m.
  • 3
  • 10/3
  • 11/3
  • 4
Answer: 10/3
Q7 | at R = 4m and σ =-3 at R = 5m. Find the flux density at R = 4.5m.
  • 4/4.5
  • 3/4.5
  • 2/4.5
  • 1/4.5
Answer: 2/4.5
Q8 | at R = 4m and σ = -3 at R = 5m. Find the flux density at R = 6m.
  • 17/6
  • -17/6
  • 13/6
  • -13/6
Answer: -13/6
Q9 | Find the electric potential for an electric field 3units at a distance of 2m.
  • 9
  • 4
  • 6
  • 3/2
Answer: 6
Q10 | Find the potential at a point (4, 3, -6) for the function V = 2x2y + 5z.
  • 96
  • 66
  • 30
  • -66
Answer: 66
Q11 | -10 units)
  • 2.1
  • 2.33
  • 2.5
  • 2.77
Answer: 2.5
Q12 | Transform the vector A = 3i – 2j – 4k at P(2,3,3) to cylindrical coordinates
  • -3.6j – 4k
  • -3.6j + 4k
  • 3.6j – 4k
  • 3.6j + 4k
Answer: -3.6j – 4k
Q13 | , -2)
  • 2.467i + j + 1.167k
  • 2.467i – j + 1.167k
  • 2.467i – j – 1.167k
  • 2.467i + j – 1.167k
Answer: 2.467i + j + 1.167k
Q14 | Transform the vector (4,-2,-4) at (1,2,3) into spherical coordinates.
  • 3.197i – 2.393j + 4.472k
  • -3.197i + 2.393j – 4.472k
  • 3.197i + 2.393j + 4.472k
  • -3.197i – 2.393j – 4.472k
Answer: -3.197i + 2.393j – 4.472k
Q15 | units.
  • 500
  • 250
  • 1000
  • 2000
Answer: 1000
Q16 | m/s.
  • 16.67
  • 2400
  • 2880
  • 0.06
Answer: 2400
Q17 | Find the mean free path of an electron travelling at a speed of 18m/s in 2 seconds.
  • 9
  • 36
  • 0.11
  • 4.5
Answer: 36
Q18 | units.
  • 200
  • 50
  • 400
  • 0.02
Answer: 200
Q19 | units and E = 8 units.
  • 1.77
  • 2.25
  • 36
  • 144
Answer: 36
Q20 | units.
  • 3
  • 2
  • 60
  • 2.4
Answer: 60
Q21 | Compute the refractive index when the dielectric constant is 256 in air.
  • 2562
  • 16
  • 256
  • 64
Answer: 16
Q22 | in air.
  • 1.41
  • 3.5
  • 2.2
  • 1.73
Answer: 1.73
Q23 | Calculate the energy in the 4F capacitor.
  • 128kj
  • 1.28kj
  • 12.8kj
  • 1280j
Answer: 12.8kj
Q24 | kV.
  • 350n
  • 0.035kn
  • 0.035n
  • 3.35kn
Answer: 0.035n
Q25 | kV. Find „a‟.
  • 1m
  • 1cm
  • 10cm
  • 1mm
Answer: 1mm
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