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Satkriti Roao
@satkriti-roao
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Joined: Jun 14, 2021
Last seen: Aug 6, 2021
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Topics: 2248 / Replies: 1
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Topic
In the straight wire A, current is flowing in the vertically downward direction whereas in wire B the current is flowing in the vertically upward direction.
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 76
Topic
Write some of the important uses of electromagnets.
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 67
Topic
State the factors on which the strength of an electromagnet depends. How does it depend on these factors?
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 72
Topic
Explain why, the core of an electromagnet should be of soft iron and not of steel.
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 387
Topic
Explain why, an electromagnet is called a temporary magnet.
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 124
Topic
What is an electromagnet? Describe the construction and working of an electromagnet with the help of a labelled diagram.
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 129
Topic
What is the shape of field lines inside a current-carrying solenoid? What does the pattern of field lines inside a current-carrying solenoid indicate? (b) List three ways in which the magnetic field strength of a current-carrying solenoid can be in...
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 74
Topic
Name the type of magnet with which the magnetic field pattern of a current-carrying solenoid resembles.
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 65
Topic
What is a solenoid? Draw a sketch to show the magnetic field pattern produced by a current-carrying solenoid.
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 105
Topic
(a) How does an electromagnet differ from a permanent magnet? (b) Name two devices in which electromagnets are used and two devices where permanent magnets are used.
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 78
Topic
(a) Draw a circuit diagram to show how a soft iron piece can be transformed into an electromagnet. (b) Describe how an electromagnet could be used to separate copper from iron in a scrapyard.
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 191
Topic
Name any two factors on which the strength of magnetic field produced by a current-carrying solenoid depends. How does it depend on these factors?
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 93
Topic
State and explain the Clock face rule for determining the polarities of a circular wire carrying current.
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 64
Topic
Draw the magnetic lines of force due to a circular wire carrying current. (b) What are the various ways in which the strength of magnetic field produced by a current-carrying circular coil can be increased?
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 102
Topic
A patient in a hospital is given soup daily in a cylindrical bowl of diameter 7 cm. If the bowl is filled with soup to a height of 4 cm
5 years ago
Forum
Surface Areas and Volumes
Replies: 0
Views: 123
Topic
A lead pencil consists of a cylinder of wood with solid cylinder of graphite filled in the interior. The diameter of the pencil is 7 mm and the diameter of the graphite is 1 mm.
5 years ago
Forum
Surface Areas and Volumes
Replies: 0
Views: 108
Topic
The capacity of a closed cylindrical vessel of height 1m is 15.4 liters. How many square meters of metal sheet would be needed to make it?
5 years ago
Forum
Surface Areas and Volumes
Replies: 0
Views: 101
Topic
It costs Rs 2200 to paint the inner curved surface of a cylindrical vessel 10m deep. If the cost of painting is at the rate of Rs 20 per m^2, find
5 years ago
Forum
Surface Areas and Volumes
Replies: 0
Views: 185
Topic
If the lateral surface of a cylinder is 94.2 cm^2 and its height is 5 cm, then find (i) radius of its base (ii) its volume.
5 years ago
Forum
Surface Areas and Volumes
Replies: 0
Views: 302
Topic
A soft drink is available in two packs – (i) a tin can with a rectangular base of length 5cm and width 4cm, having a height of 15 cm
5 years ago
Forum
Surface Areas and Volumes
Replies: 0
Views: 150
Page 27 / 113

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