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Worksheetsunit 1 physics
Total questions: 10
Worksheet time: 5mins
Two point charges repel each other with force F, when placed in water of dielectric constant 81. what will be its value when they are placed in air?
81F
F/81
F
None of these
A charge Q is distributed on the over the metal sphere of radius r. What will be value of electric field at the centre of the sphere?
KQ/r
KQq/r
Kq/r2
0
The ratio of electric field intensity due to a dipole at point on equatorial line to axial line, when points are at the same distance from the centre of dipole
2
1/2
1
0
A uncharges conductor A placed on insulating stand is brought with near charged conductor B. What will be change in charge of B?
decreases
increases
no change
will become exactly half
An electron and proton are released from rest in uniform electric field. Which of them will have large acceleration?
electron
proton
same
none of these
If dipole of charge 2μC is placed inside a sphere of radius 2m, what is net flux linked with a sphere?
4Nm2C-1
2Nm2C-1
0
none of these
If an electron is accelerated by a potential difference of 1 volt, calculate the gain in kinetic energy.
1eV
1.6x 10-19J
1V
none of above
The number of field lines originating from a point charge q=8.854μC
1Nm2C-1
1012Nm2C-1
8.854Nm2C-1
0
Charge on a conducting metal sphere present at Charge on a conducting metal sphere present at
both inside and outside of sphere
On the surface of sphere
Outside the sphere
inside the sphere
If a +ve charge is moved from low to high potential region,the electric potential energy:
increases
decreases
remain the same
may increase or decrease
