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This set of Electromagnetics Multiple Choice Questions & Answers (MCQs) focuses on Electromagnetics Set 2
Q1 | If V = 2x2y – 5z, find its electric field at point (-4,3,6)
- 47.905
- 57.905
- 67.905
- 77.905
Q2 | Find the potential between a(-7,2,1) and b(4,1,2). Given E = (-6y/x2 )i + ( 6/x) j + 5 k.
- -8.014
- -8.114
- -8.214
- -8.314
Q3 | A field in which a test charge around any closed surface in static path is zero is called
- solenoidal
- rotational
- irrotational
- conservative
Q4 | The potential in a lamellar field is
- 1
- 0
- -1
- ∞
Q5 | Line integral is used to calculate
- force
- area
- volume
- length
Q6 | The energy stored in the inductor 100mH with a current of 2A is
- 0.2
- 0.4
- 0.6
- 0.8
Q7 | Gauss law for electric field uses surface integral. State True/False
- true
- false
Q8 | Surface integral is used to compute
- surface
- area
- volume
- density
Q9 | Coulomb’s law can be derived from Gauss law. State True/ False
- true
- false
Q10 | Evaluate Gauss law for D = 5r2/4 i in spherical coordinates with r = 4m and θ = π/2.
- 600
- 599.8
- 588.9
- 577.8
Q11 | The ultimate result of the divergence theorem evaluates which one of the following?
- field intensity
- field density
- potential
- charge and flux
Q12 | The divergence theorem converts
- line to surface integral
- surface to volume integral
- volume to line integral
- surface to line integral
Q13 | The triple integral is used to compute volume. State True/False
- true
- false
Q14 | The volume integral is three dimensional. State True/False
- true
- false
Q15 | Using volume integral, which quantity can be calculated?
- area of cube
- area of cuboid
- volume of cube
- distance of vector
Q16 | Gauss theorem uses which of the following operations?
- gradient
- curl
- divergence
- laplacian
Q17 | The Gauss divergence theorem converts
- line to surface integral
- line to volume integral
- surface to line integral
- surface to volume integral
Q18 | Find the divergence theorem value for the function given by (ez, sin x, y2)
- 1
- 0
- -1
- 2
Q19 | Divergence theorem computes to zero for a solenoidal function. State True/False.
- true
- false
Q20 | Coulomb is the unit of which quantity?
- field strength
- charge
- permittivity
- force
Q21 | Coulomb law is employed in
- electrostatics
- magnetostatics
- electromagnetics
- maxwell theory
Q22 | Find the force between 2C and -1C separated by a distance 1m in air(in newton).
- 18 x 106
- -18 x 106
- 18 x 10-6
- -18 x 10-6
Q23 | Two charges 1C and -4C exists in air. What is the direction of force?
- away from 1c
- away from -4c
- from 1c to -4c
- from -4c to 1c
Q24 | The Coulomb law is an implication of which law?
- ampere law
- gauss law
- biot savart law
- lenz law
Q25 | For a charge Q1, the effect of charge Q2 on Q1 will be,
- f1 = f2
- f1 = -f2
- f1 = f2 = 0
- f1 and f2 are not equal