PHYSICS _XII _ELECTROSTATICS Test

PHYSICS _XII _ELECTROSTATICS Test

1. The capacitance of a parallel plate capacitor does not depend upon :

a) Nature of the metal used as plates
b) Distance betweeen the plates
c) Medium between the plates
d) Area of the plates
2. Two capacitors of 4uF are joined in series, the combined capacitancee is :

a) 1/ 2 u F
b) 8 u F
c) 2 u F
d) 1/ 8 u F
3. The point where electric field is zero, there the p.d is always :

a) Very small
b) Constant
c) Very large
d) Zero
4. Potential difference is analogous to :

a) Inertia
b) Energy
c) Pressure
d) Force
5. The quantity that is zero between two points on a uniform conductor is :

a) Potential difference
b) Electric Charge
c) Electric intensity
d) Electric Flux
6. Work done in carrying a charge q once round the circle of radius r with a charge q at the centre is :

a) K q / r
b) Zero
c) K q2 / r
d) K q / r
7. The earth's surface is considered to be at :

a) Infinite potential
b) Zero potential
c) Negative potential
d) Positive potential
8. The electric field between two electrons seperated by a distance r varies as :

a) r-2
b) r
c) r 2
d) r-1
9. A charge of 1.6 n C is accelerated through a P.D of 100 volts, it will attain a kinetic energy equal to :

a) 1 Mev
b) 1010 eV
c) 10-7 ev
d) 1Bev
10. When a dielectric is placed in an electric field, it becomes :

a) Negative
b) Polarized
c) Conductive
d) Insulated
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