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Sudhanshu Singh
Subject: Physics
, asked on 15/5/18
Solve this and please don't give any link...
12.
(AIPMT 2007, AIIMS 2008)
A hollow cylinder has a charge q C within it.
If
$\varphi $
is the electric flux in units of Vm associated with the curved surface B, the flux linked with the plane surface A in units of Vm will be
$\left(a\right)\frac{q}{2{\epsilon}_{0}}\left(b\right)\frac{\varphi}{3}\phantom{\rule{0ex}{0ex}}\left(c\right)\frac{q}{{\epsilon}_{0}}-\phi \left(d\right)\frac{1}{2}\left(\frac{q}{{\epsilon}_{0}}-\varphi \right)$
Answer
1
Vivek Kumar
Subject: Physics
, asked on 14/5/18
Solve this:
6.
A test charge q is moved without accelerating From A to C along the path from A to B & B to C in electric field.
(i) calculate potential difference between A & c.
(ii) At what point of the two is electric potential more & why?
Answer
1
Mitali
Subject: Physics
, asked on 14/5/18
Please solve... what will be the potential on the small sphere when.the switch S is opened...? How do we do it...??! Does the small spehere get Q/3 charge on itself..?? The answer says that the potential on small sphere is same as that of the large sphere...
Two thin conducting shells of radii R and 3 R are shown in the figure. The outer shell carries a charge + Q and the inner shell is neutral. The inner shell is earthed with the help of a switch S. Based on the information, which of the following statements are correct?
Answer
1
Kabir Chhabra
Subject: Physics
, asked on 14/5/18
Q35:
Q.
If the potential at the centre of a uniformly charged hollow sphere of radius R is V then electric field at a distance r from the centre of sphere will be (r > R)
$\left(\mathrm{a}\right)\frac{\mathrm{VR}}{{\mathrm{r}}^{2}}\left(\mathrm{b}\right)\frac{\mathrm{Vr}}{{\mathrm{R}}^{2}}\phantom{\rule{0ex}{0ex}}\left(\mathrm{c}\right)\frac{\mathrm{VR}}{\mathrm{r}}\left(\mathrm{d}\right)\frac{\mathrm{VR}}{{\mathrm{R}}^{2}+{\mathrm{r}}^{2}}$
Answer
2
Kabir Chhabra
Subject: Physics
, asked on 14/5/18
Solve this :
Answer
1
Ashutosh Vk
Subject: Physics
, asked on 13/5/18
Solve this:
Answer
1
Aparna Sahu
Subject: Physics
, asked on 13/5/18
Solve this.
Answer
1
Sudhanshu Singh
Subject: Physics
, asked on 11/5/18
Solve this with explanation...:
Q 1) Consider thetwo charges of magnitude + 3Q and - 3Q placed at the points (0, 0) and (1, 1). find the locus of the points where the potential due the system is zero.
A) x
^{2}
+y
^{2}
=1
B) x
^{2}
+y
^{2}
=4
C) x+y=1
D) d+y=0
Answer
1
Mitali
Subject: Physics
, asked on 11/5/18
Pls solve the question
Answer
1
Mitali
Subject: Physics
, asked on 11/5/18
Q). Explain the meanng of following 2 expressions in terms of potential energy.
1).
${q}_{1}{q}_{2}$
> 0
2).
${q}_{1}{q}_{2}$
< 0
Answer
1
Kabir Chhabra
Subject: Physics
, asked on 10/5/18
Q.43. A solid sphere of radius R is charged uniformly. At what distance from its surface is the electrostatic potential is half the potential at its centre?
(a) R
(b) R/2
(c) R/3
(d) 2R
Answer
1
Kabir Chhabra
Subject: Physics
, asked on 10/5/18
Q.44. Two capacitors
${C}_{1}and{C}_{2}$
are connected in a circuit as shown in figure. The potential difference (
${V}_{A}-{V}_{B}$
) is
(a) 8 V
(b) - 12 V
(c) - 8 V
(d) 12 V
Answer
1
Kabir Chhabra
Subject: Physics
, asked on 10/5/18
Q42
Q42. A charge configuration is shown in figure. What is the potential at a point P at a distance r on the axis, as shown assuming r >> a ?
$\left(\mathrm{a}\right)\frac{\mathrm{q}}{4{\mathrm{\pi \epsilon}}_{0}}\left(\frac{2\mathrm{a}}{{\mathrm{r}}^{2}}+\frac{1}{\mathrm{r}}\right)\left(\mathrm{b}\right)\frac{\mathrm{q}}{4{\mathrm{\pi \epsilon}}_{0}}\left(\frac{2\mathrm{a}}{\mathrm{r}}+\frac{1}{{\mathrm{r}}^{2}}\right)\phantom{\rule{0ex}{0ex}}\phantom{\rule{0ex}{0ex}}\left(\mathrm{c}\right)\frac{\mathrm{q}}{4{\mathrm{\pi \epsilon}}_{0}}\left(\frac{\mathrm{a}}{{\mathrm{r}}^{2}}+\frac{1}{\mathrm{r}}\right)\left(\mathrm{d}\right)\frac{\mathrm{q}}{4{\mathrm{\pi \epsilon}}_{0}}\left(\frac{\mathrm{a}}{{\mathrm{r}}^{2}}+\frac{2}{\mathrm{r}}\right)$
Answer
1
Kabir Chhabra
Subject: Physics
, asked on 8/5/18
Q39
Q39. Two capacitors A (2
$\mathrm{\mu F}$
) and B ( 5
$\mathrm{\mu F}$
) are connected to two batteries as shown in the figure. Then the potential difference in volts between the plates of A is
(a) 2 (b) 5 (c) 11 (d) 18
Answer
1
Kabir Chhabra
Subject: Physics
, asked on 8/5/18
Q32
Q32. In the circuit below, capacitors A and B have identical geometry, but a material of dielectric constant 3 is present between the plates of B. The potential differences across A and B are, respectively
(a) 2.5 V, 0.5 V
(b) 2 V, 8 V
(c) 7.5 V, 2.5 V
(d) 8 V, 2 V
Answer
2
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12.(AIPMT 2007, AIIMS 2008)A hollow cylinder has a charge q C within it.$\left(a\right)\frac{q}{2{\epsilon}_{0}}\left(b\right)\frac{\varphi}{3}\phantom{\rule{0ex}{0ex}}\left(c\right)\frac{q}{{\epsilon}_{0}}-\phi \left(d\right)\frac{1}{2}\left(\frac{q}{{\epsilon}_{0}}-\varphi \right)$

6.A test charge q is moved without accelerating From A to C along the path from A to B & B to C in electric field. (i) calculate potential difference between A & c.(ii) At what point of the two is electric potential more & why?

Two thin conducting shells of radii R and 3 R are shown in the figure. The outer shell carries a charge + Q and the inner shell is neutral. The inner shell is earthed with the help of a switch S. Based on the information, which of the following statements are correct?

Q. If the potential at the centre of a uniformly charged hollow sphere of radius R is V then electric field at a distance r from the centre of sphere will be (r > R)

$\left(\mathrm{a}\right)\frac{\mathrm{VR}}{{\mathrm{r}}^{2}}\left(\mathrm{b}\right)\frac{\mathrm{Vr}}{{\mathrm{R}}^{2}}\phantom{\rule{0ex}{0ex}}\left(\mathrm{c}\right)\frac{\mathrm{VR}}{\mathrm{r}}\left(\mathrm{d}\right)\frac{\mathrm{VR}}{{\mathrm{R}}^{2}+{\mathrm{r}}^{2}}$

Solve this :Q 1) Consider thetwo charges of magnitude + 3Q and - 3Q placed at the points (0, 0) and (1, 1). find the locus of the points where the potential due the system is zero.

A) x

^{2}+y^{2}=1B) x

^{2}+y^{2}=4C) x+y=1

D) d+y=0

1). ${q}_{1}{q}_{2}$ > 0

2). ${q}_{1}{q}_{2}$ < 0

(a) R

(b) R/2

(c) R/3

(d) 2R

(a) 8 V

(b) - 12 V

(c) - 8 V

(d) 12 V

Q42. A charge configuration is shown in figure. What is the potential at a point P at a distance r on the axis, as shown assuming r >> a ?

$\left(\mathrm{a}\right)\frac{\mathrm{q}}{4{\mathrm{\pi \epsilon}}_{0}}\left(\frac{2\mathrm{a}}{{\mathrm{r}}^{2}}+\frac{1}{\mathrm{r}}\right)\left(\mathrm{b}\right)\frac{\mathrm{q}}{4{\mathrm{\pi \epsilon}}_{0}}\left(\frac{2\mathrm{a}}{\mathrm{r}}+\frac{1}{{\mathrm{r}}^{2}}\right)\phantom{\rule{0ex}{0ex}}\phantom{\rule{0ex}{0ex}}\left(\mathrm{c}\right)\frac{\mathrm{q}}{4{\mathrm{\pi \epsilon}}_{0}}\left(\frac{\mathrm{a}}{{\mathrm{r}}^{2}}+\frac{1}{\mathrm{r}}\right)\left(\mathrm{d}\right)\frac{\mathrm{q}}{4{\mathrm{\pi \epsilon}}_{0}}\left(\frac{\mathrm{a}}{{\mathrm{r}}^{2}}+\frac{2}{\mathrm{r}}\right)$

Q39. Two capacitors A (2 $\mathrm{\mu F}$ ) and B ( 5 $\mathrm{\mu F}$) are connected to two batteries as shown in the figure. Then the potential difference in volts between the plates of A is

(a) 2 (b) 5 (c) 11 (d) 18

Q32. In the circuit below, capacitors A and B have identical geometry, but a material of dielectric constant 3 is present between the plates of B. The potential differences across A and B are, respectively

(a) 2.5 V, 0.5 V

(b) 2 V, 8 V

(c) 7.5 V, 2.5 V

(d) 8 V, 2 V