NCERT Solutions
Board Paper Solutions
Ask & Answer
School Talk
Login
GET APP
Login
Create Account
Popular
Latest
Expert Answers
ALL
Son Ser
Subject: Science
, asked on 24/1/18
Solve this:
What is the magnitude of the induced current in the circular loop KLMN of radius r, if the straight wire PQ carries a steady current of magnitude 'I' ampere ? How ?
Answer
1
Sambhav Goyal
Subject: Science
, asked on 23/1/18
Q.15. When a circular coil placed in a uniform magnetic field of induction 7.5 T is removed from it in 0.02 s,
an emf of 7.5 volt is induced in the coil. The area of the coil is _________.
Answer
1
Utkarsh Tyagi
Subject: Science
, asked on 23/1/18
Q.56. At what angle with the horizontal should a ball be thrown so that the range R is related to time of flight 'T' as
R
=
5
T
2
g
=
10
m
/
s
e
c
2
(A) 30
°
(B) 45
°
(C) 60
°
(D) 90
°
Answer
1
Utkarsh Tyagi
Subject: Science
, asked on 23/1/18
Q.54. Two blocks A and B, having masses
m
1
a
n
d
m
2
respectively are placed in contact on a smooth horizontal surface. A force F is applied horizontally on A. The contact force between A and B is
(A)
m
1
m
2
F
(B)
m
2
m
1
F
(C)
m
1
F
m
1
+
m
2
Answer
1
Utkarsh Tyagi
Subject: Science
, asked on 23/1/18
Q.50. A ball of mass 0.1 kg is thrown against a wall. It strikes the wall normally with a velocity of 30 m/sec and rebounds with a velocity of 20 m/sec. The impulse of the force exerted by the ball on the wall is
(A) 0.5 Ms
(B) 50 Ns
(C) 5 Ns
(D) 1 Ns
Answer
1
Utkarsh Tyagi
Subject: Science
, asked on 23/1/18
Q 52 pls answer fast
Q.52. There are two bodies of masses 100 kg and 10000 kg separated by a distance 1 m. At what distance from the smaller body, intensity of gravitational field will be zero.
(A)
1
9
m
(B)
1
10
m
(C)
1
11
m
(D)
10
11
m
Answer
1
Son Ser
Subject: Science
, asked on 22/1/18
Plzz fast i have exams 2moro. Dont provide any link plzzzzz
1)
If the poles are interchanged then what will be the direction of current. Draw the diagram .
2) Write the rule applied here .
Answer
3
Choosy Nanda Rocks
Subject: Science
, asked on 21/1/18
What are the advantages of AC current over DC current?
Answer
1
Fatima Reefat
Subject: Science
, asked on 16/1/18
State the characteristics of magnetic field lines produce by current carrying circular coil.
Answer
1
Fatima Reefat
Subject: Science
, asked on 16/1/18
how the magnetic field produced due to a circular coil depends on its radius
Answer
1
Kalyani
Subject: Science
, asked on 14/1/18
in what direction will a magnetic compass deflect if it is placed on the west side of a wire it is carrying current in a vertically upward direction... Can u please explain using a diagram
Answer
1
Sameer Ahmed
Subject: Science
, asked on 14/1/18
How to apply Flemings right hand rule on this.
Answer
4
Asmitha Manikandan
Subject: Science
, asked on 11/1/18
explain the working of motar
Answer
1
Romil Singh
Subject: Science
, asked on 11/1/18
Solve this:
Qi) What is the function of earth wire in electrical instruments ?
ii) Explain what is short circuiting an electric supply.
iii) What is the usual current rating of the fuse wire in the line to feed
(a) Lights and fans ? (b) Appliances of 2kW or more power ?
Answer
2
Nikhil
Subject: Science
, asked on 10/1/18
when and why does a current carying conductor experience a magnetic force if kept in magnetic field
Answer
2
Prev
5
6
7
8
9
Next
What are you looking for?
What is the magnitude of the induced current in the circular loop KLMN of radius r, if the straight wire PQ carries a steady current of magnitude 'I' ampere ? How ?
an emf of 7.5 volt is induced in the coil. The area of the coil is _________.
(A) 30
(B) 45
(C) 60
(D) 90
(A)
(B)
(C)
(A) 0.5 Ms
(B) 50 Ns
(C) 5 Ns
(D) 1 Ns
Q.52. There are two bodies of masses 100 kg and 10000 kg separated by a distance 1 m. At what distance from the smaller body, intensity of gravitational field will be zero.
(A)
(B)
(C)
(D)
2) Write the rule applied here .
Qi) What is the function of earth wire in electrical instruments ?
ii) Explain what is short circuiting an electric supply.
iii) What is the usual current rating of the fuse wire in the line to feed
(a) Lights and fans ? (b) Appliances of 2kW or more power ?