Hi friends, these are some of the multiple choice questions on electrical and magnetic properties. These are some of the basic questions which are asked in previous competitive papers check out and comment...
l) The relation between absolute permittivity of air (2.0), absolute permeability of air (pg) and velocity of light (c) is given by
A. 𝜇oϵo = C^2
B) 𝜇oϵo = C
C) 1/𝜇oϵo = C
D) 1/𝜇oϵo = C^2
Ans:D
2) The dielectric constant of most materials lies between
A) 1 and 10
B) 10 and 20
C) 20 and 50
D) 50 and 100
Ans:A
3) A test charge means a charge of
A) -1 C
B) 1 electron
C) +1 C
D) -20 C
Ans:C
4) Electric lines of force leave or enter the charge surface at an angle of
A) 30°
B) 45°
C) 90°
D) depending upon the angle of launch and entry
Ans:C
5) Electric field intensity is measured in
A) volts/meter
B) Newton/meter
C) Newton-meter
D) Amperes/meter
Ans:A
6) Electric field intensity is a .
A) scalar
B) phasor
C) Vector
D) variable
Ans:C
7) Electric field intensity at a point due to a given charge if the relative permittivity of the medium decreases.
A) decreases
B) remains unchanged
C) increases
D) becomes zero
Ans:C
8) The electric field intensity between the parallel plate air capacitor is 20 N/ C. If an insulating slab of relative permittivity 5 is placed between the plates, then electric field intensity Will be
A) 20 N/C
B) 100 N/C
C) 4 N/C
D) 40 N/C
Ans:C
9) The electric flux density is a quantity.
A) phasor
B) vector
C) scalar
D) variable
Ans:B
10) The permittivity of a material is given by one of the following formulas.
A) DE
B) E/D
C) D^2/E
D) D/E
Ans:D
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l) The relation between absolute permittivity of air (2.0), absolute permeability of air (pg) and velocity of light (c) is given by
A. 𝜇oϵo = C^2
B) 𝜇oϵo = C
C) 1/𝜇oϵo = C
D) 1/𝜇oϵo = C^2
Ans:D
2) The dielectric constant of most materials lies between
A) 1 and 10
B) 10 and 20
C) 20 and 50
D) 50 and 100
Ans:A
3) A test charge means a charge of
A) -1 C
B) 1 electron
C) +1 C
D) -20 C
Ans:C
4) Electric lines of force leave or enter the charge surface at an angle of
A) 30°
B) 45°
C) 90°
D) depending upon the angle of launch and entry
Ans:C
5) Electric field intensity is measured in
A) volts/meter
B) Newton/meter
C) Newton-meter
D) Amperes/meter
Ans:A
6) Electric field intensity is a .
A) scalar
B) phasor
C) Vector
D) variable
Ans:C
7) Electric field intensity at a point due to a given charge if the relative permittivity of the medium decreases.
A) decreases
B) remains unchanged
C) increases
D) becomes zero
Ans:C
8) The electric field intensity between the parallel plate air capacitor is 20 N/ C. If an insulating slab of relative permittivity 5 is placed between the plates, then electric field intensity Will be
A) 20 N/C
B) 100 N/C
C) 4 N/C
D) 40 N/C
Ans:C
9) The electric flux density is a quantity.
A) phasor
B) vector
C) scalar
D) variable
Ans:B
10) The permittivity of a material is given by one of the following formulas.
A) DE
B) E/D
C) D^2/E
D) D/E
Ans:D
If you like my post please share it with your friends and subscribe to latest updates.. If you have doubts you can start new topic on forum and start discussion with our readers..
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