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Alok Singh
Subject: Physics
, asked on 21/5/18
6. Two metallic balls of equals masses m are charged to 15 and -30 units of electricity. They are brought in contact with each other and then again separated to initial distance. The ratio of the magnitudes of forces between the two balls before and after contact is
A) 15 : 2
B) 2 : 15
C) 15 : 4
D) 4 : 15
Answer
1
Alok Singh
Subject: Physics
, asked on 21/5/18
5. The charges
q
1
=
2
μ
C
and
q
2
=
-
4
μ
C
are located at coordinates (-1, -1) and (3, 2) respectively. If we have put one more charge
q
3
=
8
μ
C
in the line joining the two charges such that the charges maintain an equilibrium, then find the coordinates of the location of
q
3
.
A) (11, 8)
B) (12, 9)
C) (7, 5)
D) (11, 9)
Answer
1
Tarun Krishnan
Subject: Physics
, asked on 21/5/18
Solve this:
Q. Example 1.7
. Consider the charges q, q and –q placed at the vertices of an equilateral triangle, as shown in Fig. 1.10. What is the force on each charge?
Answer
1
Tarun Krishnan
Subject: Physics
, asked on 21/5/18
Solve this:
Answer
1
Ananya Mandal
Subject: Physics
, asked on 21/5/18
how can we find the electric field at distance (r) from an uniform infinitely charged straight rod without using gauss' law and by using vectors and trigonometry?
Answer
2
Sudhanshu Singh
Subject: Physics
, asked on 21/5/18
Please solve this......and don't give any link..:
4. If the force between the electron in tne first Bohr orbit and the nucleus (proton) in the hydrogen atom is F, then the force between them when the electron is in the second orbit is
Answer
1
Sangeeta Jha
Subject: Physics
, asked on 20/5/18
solve this plz
Q.3. A girl press her physics test book against a rough vertical wall with her hand. The direction of the frictional force on the book exerted by the wall is.
(1) Downward
(2) Upward
(3) Out from the wall
(4) Into the wall
Answer
1
Isha
Subject: Physics
, asked on 20/5/18
for point charge of = magnitude are placed at the 4 corners of a square a,b,c,d.find the net electrostatic force at the centre of the square
Answer
2
Noora
Subject: Physics
, asked on 18/5/18
what is the ratio of electric field at a point on the equatorial line to the field at a point on axial line when the pints are at the same distance from the centre of the dipole.(2marks)
Answer
1
Om Prasad
Subject: Physics
, asked on 18/5/18
Please set this question as priority
I have tried this many times but couldn't
Please solve it
Thanks in advance
Q. In the given figure,
q
1
a
n
d
q
2
are two positive charges. At what position must a negative charge Q be placed so that the given system of charges is in equilibrium?
Answer
1
Palak
Subject: Physics
, asked on 17/5/18
Give solution ?:
14. The figures shows four situations in which charged particles are at equal distances from the origin. If E
1
, E
2
, E
3
and E
4
be the magnitude of the net electric fieleds at the origin in four situation ( i) , (ii) , (iii) and (iv) respectively, then
(1)E
1
=E
2
=E
3
=E
4
(2)E
1
=E
2
>E
3
>E
4
(3)E
1
<E
2
<E
3
=E
4
(4)E
1
>E
2
=E
3
<E
4
Answer
1
Palak
Subject: Physics
, asked on 17/5/18
Give solutions?
Q13. A point charge 50
μC
is located in the XY plane at the point of position vector
r
0
→
=
2
i
^
+
3
j
^
meter. What is the electric field at the point of position vector
r
→
=
8
i
^
-
5
j
^
meter
(1) 1200 V/m (2) 0.04 V/m
(3) 900 V/m (4) 4500 V/m
Answer
1
Palak
Subject: Physics
, asked on 17/5/18
Give solution?
7.
Four point charges are placed at the corners of a square ABCD of side length 1.0 m as shown. Find electric field at centre O of square :-
(
1
)
4
2
×
9
×
10
8
N
/
C
,
p
a
r
a
l
l
e
l
t
o
s
i
d
e
A
B
(
2
)
2
×
9
×
10
8
N
/
C
,
p
a
r
a
l
l
e
l
t
o
s
i
d
e
A
B
(
3
)
4
2
×
9
×
10
8
N
/
C
,
p
a
r
a
l
l
e
l
t
o
s
i
d
e
B
C
(
4
)
2
2
×
9
×
10
9
N
/
C
,
p
a
r
a
l
l
e
l
t
o
s
i
d
e
A
D
Answer
1
Palak
Subject: Physics
, asked on 17/5/18
Give solution ?
6.
Net electric field at origan O is :-
1
K
Q
a
2
i
^
+
j
^
2
K
Q
a
2
i
^
-
j
^
1
K
Q
a
2
-
i
^
-
j
^
4
K
Q
2
a
2
-
i
^
+
j
^
Answer
1
Palak
Subject: Physics
, asked on 17/5/18
Give solution ?
Q.5. Three charges are placed at the vertex of an equilateral triangle. Electric field due to Q charge is at centre of triangle is E. If net electric at centre is 3 E and along to - y axis then value of q is :-
(1) 4 Q
(2) - 4 Q
(3) 3 Q
(4) - 2 Q
Answer
3
Prev
1
2
3
4
5
Next
What are you looking for?
A) 15 : 2
B) 2 : 15
C) 15 : 4
D) 4 : 15
A) (11, 8)
B) (12, 9)
C) (7, 5)
D) (11, 9)
Q. Example 1.7. Consider the charges q, q and –q placed at the vertices of an equilateral triangle, as shown in Fig. 1.10. What is the force on each charge?
4. If the force between the electron in tne first Bohr orbit and the nucleus (proton) in the hydrogen atom is F, then the force between them when the electron is in the second orbit is
Q.3. A girl press her physics test book against a rough vertical wall with her hand. The direction of the frictional force on the book exerted by the wall is.
(1) Downward
(2) Upward
(3) Out from the wall
(4) Into the wall
I have tried this many times but couldn't
Please solve it
Thanks in advance
Q. In the given figure, are two positive charges. At what position must a negative charge Q be placed so that the given system of charges is in equilibrium?
14. The figures shows four situations in which charged particles are at equal distances from the origin. If E1, E2, E3 and E4 be the magnitude of the net electric fieleds at the origin in four situation ( i) , (ii) , (iii) and (iv) respectively, then
(1)E1=E2=E3=E4 (2)E1=E2>E3>E4
(3)E1<E2<E3=E4 (4)E1>E2=E3<E4
Q13. A point charge 50 is located in the XY plane at the point of position vector = meter. What is the electric field at the point of position vector meter
(1) 1200 V/m (2) 0.04 V/m
(3) 900 V/m (4) 4500 V/m
7. Four point charges are placed at the corners of a square ABCD of side length 1.0 m as shown. Find electric field at centre O of square :-
6. Net electric field at origan O is :-
Q.5. Three charges are placed at the vertex of an equilateral triangle. Electric field due to Q charge is at centre of triangle is E. If net electric at centre is 3 E and along to - y axis then value of q is :-
(1) 4 Q
(2) - 4 Q
(3) 3 Q
(4) - 2 Q