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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
AllTopicsReplies
Topic
Name the device which converts mechanical energy into electric energy.
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 108
Topic
A charged particle enters at right angles into a uniform magnetic field as shown:
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 143
Topic
What is the force on a current-carrying wire that is parallel to a magnetic field? Give reason for your answer.
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 319
Topic
Which way does the wire in the diagram below tend to move?
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 290
Topic
If the current in a wire is flowing in the vertically downward direction and a magnetic field is applied from west to east, what is the direction of force on the wire?
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 430
Topic
Which way does the wire in the diagram below tend to move?
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 375
Topic
In the simple electric motor of figure given below, the coil rotates anticlockwise as seen by the eye from position X when current flows in the coil.
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 391
Topic
What is an electric motor? With the help of a labelled diagram, describe the working of a simple electric motor. (b) What are the special features of commercial electric motors?
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 307
Topic
State what would happen to the direction of rotation of a motor if : (i) the current were reversed (ii) the magnetic field were reversed (iii) both current and magnetic fields were reversed simultaneously.
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 433
Topic
(a) In a d.c. motor, why must the current to the coil be reversed twice during each rotation? (b) What device reverses the current?
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 268
Topic
What is the principle of an electric motor? Name some of the devices in which electric motors are used.
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 395
Topic
State Fleming’s left-hand rule. Explain it with the help of labelled diagrams.
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 288
Topic
A current-carrying conductor is placed perpendicularly in a magnetic field. Name the rule which can be used to find the direction of force acting on the conductor.
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 426
Topic
Fleming’s Rule for the motor effect uses the ………………….. (b) A motor contains a kind of switch called a
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 446
Topic
What is the role of the split ring in an electric motor?
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 219
Topic
In an electric motor, which of the following remains fixed and which rotates with the coil? Commutator; Brush
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 199
Topic
Of what substance is the core of the coil of an electric motor made?
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 97
Topic
Of what substance are the brushes of an electric motor made?
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 142
Topic
What is the function of a commutator in an electric motor?
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 65
Topic
What is the other name of the split ring used in an electric motor?
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 71
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