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Name the colours corresponding to the digits 4 and 7 in the colour code scheme for carbon resistors
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0
|
2502
|
September 7, 2016
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Define the term mobility of charge carriers in a conductor. Write its S.I. unit
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0
|
10181
|
September 7, 2016
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Graph showing the variation of current versus voltage for a material GaAs is shown in the figure, Identify the region of :
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1
|
17106
|
September 7, 2016
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Give an example of a material each for which temperature coefficient of resistivity is (i) positive, (ii) negative
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0
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9802
|
September 7, 2016
|
|
The plot of the variation of potential difference across a combination of three identical cells in series, versus current is shown below. What is the emf and internal resistance of each cell?
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1
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14671
|
September 6, 2016
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Two parallel plate capacitors X and Y have the same area of plates and same separation between them
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1
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13497
|
September 6, 2016
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Obtain the expression for the energy stored per unit volume in a charged parallel plate capacitor
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1
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13007
|
September 6, 2016
|
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Derive the expression for the capacitance of a parallel plate capacitor having plate area A and plate separation d
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1
|
22770
|
September 6, 2016
|
|
In a parallel plate capacitor with air between the plates, each plate has an area of and the separation between the plates is 3mm
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1
|
3533
|
September 6, 2016
|
|
A capacitor of unknown capacitance is connected across a battery of V volts
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1
|
17218
|
September 6, 2016
|
|
The capacitors C1 and C2 having plates of area A each, are connected in series, as shown
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1
|
5144
|
September 6, 2016
|
|
Deduce the expression for the electrostatic energy stored in a capacitor of capacitance 'C' and having charge 'Q'
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1
|
9845
|
September 6, 2016
|
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Net capacitance of three identical capacitors in series is lpF. What will be their net capacitance if connected in parallel ? Find the ratio of energy stored in the two configurations if they are both connected to the same source
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0
|
4245
|
September 6, 2016
|
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Obtain the expression for the potential due to an electric dipole of dipole moment p at a point V on the axial line
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1
|
10131
|
September 6, 2016
|
|
Explain, using suitable diagrams, the differnce in the behaviour of a (i) conductor and (ii) dielectric in the presence of an external electric field. Define the terms polarization of a dielectric and write its relation with susceptibility
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1
|
4332
|
September 6, 2016
|
|
Compare the individual dipole moment and the specimen dipole moment for water molecule and oxygen molecule when placed in
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0
|
9057
|
September 6, 2016
|
|
Two isolated metal spheres A and B have radii R and 2R respectively, and same charge q. Find which of the two spheres have greater
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1
|
12969
|
September 6, 2016
|
|
A slab of material of dielectric constant K has the same area as that of the plates of a parallel plate
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1
|
2649
|
September 6, 2016
|
|
A parallel plate capacitor of capacitance C is charged to a potential V It is then connected to another uncharged capacitor having the same capacitance. Find out the ratio of the energy stored in the combined system to that stored initially in the single
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0
|
12889
|
September 6, 2016
|
|
Define an equipotential surface. Draw equipotential surfaces:
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1
|
27499
|
September 6, 2016
|
|
Two uniformly large parallel thin plates having charge densities
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0
|
1647
|
September 6, 2016
|
|
A test charge q is moved without acceleration from A to C along the path from A to B and then from B to C in electric field E as shown in the figure
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1
|
2763
|
September 6, 2016
|
|
Draw a plot showing the variation of (i) electricfield (E) and (ii) electric potential (V) with distance r due to a point charge Q
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0
|
13704
|
September 6, 2016
|
|
Write two properties of equipotential surfaces, Depict equipotential surfaces due to an isolated point charge. Why do the equipotential surfaces get closer as the distance between the equipotential surface and the source charge decreases?
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0
|
7149
|
September 6, 2016
|
|
Find the P.E. associated with a charge q if it were present at the point P with respect to the 'set-up' of two charged spheres, arranged as shown
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1
|
6085
|
September 6, 2016
|
|
A Non spherical droplets, each of radius r, have been charged to have a potential V each
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|
1
|
1122
|
September 6, 2016
|
|
Three concentric metallic shells A, B and C of radii a
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|
1
|
5779
|
September 6, 2016
|
|
Two point charges q and -2q are kept d distance apart Find the location of the point relative to charge q at which potential due to this system of charges is zero
|
|
0
|
9837
|
September 6, 2016
|
|
Two closely spaced equipotential surfaces A and B with potentials V are kept distance apart as shown in the figure. Deduce the relation between the electric field and the potential gradient between them. Write the two important conclusions concerning t
|
|
1
|
8422
|
September 6, 2016
|
|
A hollow metal sphere of radius 5 cm is charged such that the potential on its surface is 10 V What is the potential at the centre of the sphere?
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|
0
|
1685
|
September 6, 2016
|