150 Important Electrostatics and Capacitance MCQ Question and Answer | PDF Free Download
1.It was suggested by ??. that the electric field should be imagined to be divided into tubes of force containing a fixed number of lines of force.
- AKelvin
- BNewton
- CFaraday
- DAll of the above
2.The phenomenon of uncharged body getting charged merely by the nearness of a charged body is known as
- APhotoelectric effect
- BChemical effect
- CMagnetic effect
- DInduction
3.A unit tube of flux is known as ???? tube
- ANewton
- BFaraday
- CMichael
- DNone of the above
4.The number of faraday tubes of flux passing through a surface in an electric field is called
- AElectric flux
- BElectric flux density
- CMagnetic flux density
- DElectric charge density
5.The value of E within the field due to a point charge can be found with the help of
- AFaraday's law
- BKirchhoff's law
- CCoulomb's law
- DNone of the above
6.???.. at a point may be defined as equal to the lines of force passing normally through a unit cross-section at that point.
- AElectric intensity
- BMagnetic flux density
- CElectric flux
- DNone of the above
7.Electric intensity at any point in an electric field is equal to the ??. At that point.
- AElectric flux
- BMagnetic flux density
- CPotential gradient
- DNone of the above
8.Electric displacement is a ________ quantity.
- AScalar
- BVector
- CBoth of the above
- DNone of the above
9.???.. at apoint is equal to the negative potential gradient at that point.
- AElectrical intensity
- BElectrical flux
- CMagnetic flux
- DMagnetic flux density
10.The unit of dielectric strength is given by
- AV/m
- BV?/m
- CM/V
- Dm/V?
11.Dielectric strength ???. with increasing thickness
- AIncrease
- BDecrease
- CRemains altered
- DNone of the above
12.The property of a capacitor to store electricity is called its
- ACapacitance
- BCharge
- CEnergy
- DNone of the above
13.????? is that property of capacitor which delays any charge of voltage across it.
- AInductance
- BCapacitance
- CPotential gradient
- DNone of the above
14.In a cable capacitor, voltage gradient is maximum at the surface of the
- AEarth
- BConduction
- CSheath
- DInsulator
15.The time constant of an R-C circuit is defined as the time during which capacitor charging voltage actually rises to ????. percent of its ???. Value.
- A37, initial
- B63.2 initial
- C63.2 final
- D37, final
16.The time constant and R-C circuit may also be defined as the time during which the charging current falls to ????.. percent of its initial maximum value
- A37
- B42
- C63
- D73
17.The capacitance of the capacitor is influenced by
- APlate area
- BPlate separation
- CNature of dielectric
- DAll of the above
18.A capacitor consists of two
- ACeramic plates and one mica disc
- BInsulator separated by dielectric
- CSilver-coated insulators
- DConductors separated by an insulator
19.Permittivity is expressed in
- AFarad/sq-m
- BFarad/metre
- CWeber/meter
- DWeber/sq-mtr
20.Dielectric strength of a material depends on
- AMoisture contains
- BTemperature
- CThickness
- DAll of the above