Download Physics - Agra Public School

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AGRA PUBLIC SCHOOL, ARTONI, AGRA
ASSIGNMENT (2014-15)
SUBJECT : PHYSICS
CLASS-XII
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Q1.
Q2.
Q3.
Q4.
Q5.
Q6.
Q7.
Q8.
Explain concept of quantization of changes
Explain vector form of colamn’s law.
Find the expression for electric field due to dipole in following condition
(i)
Axial
(ii) Non axial
(iii) General
Find the amount of work done in rotating dipole in a uniform field E at an angle Q
Find the expression for Torque genera lid due to dipole in a uniform field E keeping at an angle Q.
Find the expression for potential due to point change.
Relats electric field to electric potential.
Find the not electric field as well as net potential at point o
Q
4q
O
2q
Q9.
Eo=?
a
3q
Find the amount of work done required to rotate the charges from their position to next position.
A q
B
2q
Q10.
Q11.
Q12.
Q13.
Q14.
Q15.
Q16.
Q17.
Q18.
Q19.
Q20.
Vo=?
C
3q
Find the magnitude as well as direction of electric field when the potential is expressed by the following Q
V= 3x2yz3
At a point (1,2,3)
Find the expression for electric field due to long infinity wire having change density λ at a distance [r].
Two sphere have having changes q1 and q2 are taken and keeping at a smaller distance. A charge dq is
drawn from first & to transfer to 2nd. Find the amount dq so that max. Force acting b/w.
Define electric potential
Find the expression for electric potential energy.
Find the dimensional formula for Co
Explain the property of electric field lines.
Coulamb force is centralized force prove it.
Define following
(i)
Linear change density
(ii)
Surface change density
(iii)
Volumetric change density
Two charges 4 Q & 5Q are keeping at a distance of 9m. find the work done in closing the change 2m towards
4q
Two sphere having same charge is keeping at a distance r metre. A third uncharged sphere is touched with A
& than B. and finally remove. Find the force acting b/w the sphere have now.
Q21.
q
Find the net force acting on charge
q. triangle is equilateral
2q
2l
3q
P.T.O
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Q22.
Q23.
Q24.
Q25.
Define following
1. Electric potential
2. Potential diff.
3. Potential Energy.
27000 smaller drops are keeping to merge a single bigger drop. Find the amount of work in this process if
charge on each smaller drop is q.
q
4q
16m
find the location of third charge when should if kept so that he system
will be in equlibrium.
Find net electric potential at the centre of Hexagon
4q
2q
2q
3q
q
2q
a
Q26.
Q27.
Q28.
Q29.
Q30.
Q31.
Q32.
Q33.
Q34.
Q35.
Find the mass of a body which is balanced by field of 10 v/m having charge 2e.
Explain property of electric field lines.
Find the effective capacitance if three capacitor of different capacitance is connecting in
(a) Series
(b) Parallel
Find the capacitance of parallel plate capacitor.
Find capacitance of spherical capacitor
Find capacitance of concentric spherical capacitor
How much energy is stare in a capacitor.
Define energy density. Find expression for energy density of a capacitor
What will be effect on capacitance of capacitor while dielectric material is inserted.
Find effective capacitance
c
c
A
c
c
c
c
Q36.
Q37.
Q38.
Q39.
Q40.
B
Find loss in energy when two capacitor of different capacitance are connected by a wire.
Define dielectric
Find electric field at a point (2,1,3) if V is expressed
V = 2x2y+3y2z2x+9x2y
One body has 3 excess electron while another has 4 lacking of electron keeping at a separation of 20m find
the force acting b/w them.
Define electric potential energy also find the expression for P.E.
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