If a 6 uF capacitor is charged to 200 V, the charge in coulombs will be____________?
A. 800 uC
B. 900 uC
C. 1200 uC
D. 1600 uC
Electrostatics
Which of the following material has least value of dielectric constant ?
Which of the following material has least value of dielectric constant ?
A. Ceramics
B. Oil
C. Glass
D. Paper
For closer tolerances which of the following capacitors is usually preferred ?
For closer tolerances which of the following capacitors is usually preferred ?
A. Paper capacitor
B. Mica capacitor
C. Ceramic disc capacitor
D. None of the above
Paper capacitors usually have a tolerance of___________?
Paper capacitors usually have a tolerance of___________?
A. ± 5%
B. ± 10%
C. ± 15%
D. ± 20%
“The surface integral of the normal component of the electric displacement D over any closed surface equals the charge enclosed by the surface”. The above statement is associated with_______?
“The surface integral of the normal component of the electric displacement D over any closed surface equals the charge enclosed by the surface”. The above statement is associated with_______?
A. Gauss’s law
B. Kirchhoff s law
C. Faraday’s law
D. Lenz’s law
capacitors can be used only for D.C ?
capacitors can be used only for D.C ?
A. Air
B. Paper
C. Mica
D. Electrolytic
The dielectric constant (relative permittivity) of glass is given by___________?
The dielectric constant (relative permittivity) of glass is given by___________?
A. 0.1 to 0.4
B. 0.5 to 1.0
C. 2.0 to 4.0
D. 5 to 100
The electrostatic force between two charges of one coulomb each and placed at a distance of 0.5 m will be____________?
The electrostatic force between two charges of one coulomb each and placed at a distance of 0.5 m will be____________?
A. 36 x 10fa
B. 36 x 107 N
C. 36 x 108 N
D. 36 x 109 N
Dielectric strength of mica is___________?
Dielectric strength of mica is___________?
A. 10 to 20 kV/mm
B. 30 to 50 kV/mm
C. 50 to 200 kV/mm
D. 300 to 500 kV/mm
capacitors are mainly used for radio frequency tuning?
capacitors are mainly used for radio frequency tuning?
A. Paper
B. Air
C. Mica
D. Electrolytic