Q.1
The capacitance between two plates increases with
Q.2
Which medium has the least dielectric strength ?
Q.3
The minimum value of potential gradient in a cable occurs in
Q.4
An electrolytic capacitor can be used for
Q.5
A capacitor consists of two
Q.6
The electric field intensity at a point situated 4 meters from a point charge is 200 N/C. If the distance is reduced to 2 meters, the field intensity will be
Q.7
A mica capacitor and a ceramic capacitor both have the same physical dimensions. Which will have more value of capacitance ?
Q.8
Dielectric strength ______ with increasing thickness
Q.9
capacitors are mainly used for radio frequency tuning.
Q.10
If a third equal and similar charge is placed between two equal and similar charges, then this third charge will
Q.11
A paper capacitor is usually available in the form of
Q.12
A unit tube of flux is known as tube
Q.13
Out of the following capacitors of identical rating which one will have the smallest dimensions ?
Q.14
What are the units of Force?
  • Newtons
  • Coulombs
  • meters
  • Watts
Q.15
What is the charge of an electron?
  • +1 C
  • 0 C
  • -1 C
  • All of above
Q.16
Electric potential is a
  • unmeasurable quantity
  • vector quantity
  • scalar quantity
  • none of above
Q.17
What is the charge of a proton?
  • +1 C
  • 0 C
  • -1 C
  • None of these
Q.18
What are the units of Charge?
  • Newtons
  • Coulombs
  • meters
  • Watts
Q.19
Which of the following is NOT an insulator?
  • Wool
  • Plastic
  • Gold
  • Rubber
Q.20
The lines of force due to charged particles are
  • always straight
  • always curved
  • sometimes curved
  • none of the above
Q.21
What is the charge of a neutron?
  • +1 C
  • 0 C
  • -1 C
  • None of these
Q.22
The SI unit of charge is
  • the ampere
  • the newton
  • the coulomb
  • the joule
Q.23
The value of k in coulomb's law depends upon
  • magnitude of charges
  • distance between charges
  • medium between two charges
  • all of above
Q.24
Electric field intensity is a quantity
  • scalar
  • vector
  • both (A) and (B)
  • none of the above
Q.25
A proton is
  • negatively charged.
  • not charged at all.
  • positively charged.
  • All of above
Q.26
In equation Q=CV, C is the constant of proportionality called the capacitor's
  • power
  • capacitance
  • heat
  • electric intensity
Q.27
The relative permittivity of free space is given by
  • 1
  • 10
  • 100
  • 1000
Q.28
A capacitor consists of
  • two insulators separated by a conductor
  • two conductors separated by an insulator
  • two insulators only
  • two conductors only
Q.29
In a capacitor the electric charge is stored in
  • metal plates
  • dielectric
  • both (A) and (B)
  • none of the above
Q.30
Which of the following is not a good conductor of electricity?
  • copper
  • silver
  • Glass
  • aluminum
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