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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 gymnosperms, the pollen chamber represents (1) the microsporangium in which pollen grains develop
5 years ago
Forum
Biology
Replies: 0
Views: 94
Topic
Which of the following propagates through leaf- tip?
5 years ago
Forum
Biology
Replies: 0
Views: 367
Topic
Which one of the following is a living fossil? (1) Saccharomyces (2) Cycas (3) Spirogyra (4) Moss
5 years ago
Forum
Biology
Replies: 0
Views: 398
Topic
Column I - Column II (A) Peritrichous - (J) Ginkgo flagellation (B) Living fossil - (K) Macrocystis
5 years ago
Forum
Biology
Replies: 0
Views: 312
Topic
In a moss the sporophyte (1) manufactures food for itself as well as for the gametophyte
5 years ago
Forum
Biology
Replies: 0
Views: 265
Topic
Peat Moss is used as packing material for sending flowers and live plants to distant places because
5 years ago
Forum
Biology
Replies: 0
Views: 331
Topic
Which of the following plants produces seeds but not flowers?
5 years ago
Forum
Biology
Replies: 0
Views: 342
Topic
What is the usual capacity of an electric fuse used (i) in the lighting circuit, and (ii) in the power circuit, of a small house?
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 128
Topic
What name is given to the device which automatically cuts off the electricity supply during short-circuiting in household wiring?
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 115
Topic
A portable radio has a built-in transformer so that it can. work from the mains instead of batteries. Is this a step-up or step-down transformer?
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 212
Topic
Two coils A and B of insulated wire are kept close to each other. Coil A is connected to a galvanometer while coil B is connected to a battery through a key. What would happen if :
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 150
Topic
The wire in Figure below is being moved downwards through the magnetic field so as to produce induced current.
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 130
Topic
If you hold a coil of wire next to a magnet, no current will flow in the coil. What else is needed to induce a current?
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 92
Topic
When the magnet shown in the diagram below is moving towards the coil, the galvanometer gives a reading to the right.
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 87
Topic
A coil is connected to a galvanometer. When the N-pole of a magnet is pushed into the coil, the galvanometer deflected to the right. What deflection, if any, is observed when :
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 99
Topic
What do you understand by the terms ‘direct current’ and ‘alternating current’? (b) Name some sources of direct current and some of alternating current.
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 108
Topic
What do you understand by the term “electromagnetic induction”? Explain with the help of a diagram. (b) Name one device which works on the phenomenon of electromagnetic induction.
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 357
Topic
Draw the labelled diagram of an A.C. generator. With the help of this diagram, explain the construction and working of an A.C. generator.
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 245
Topic
In what respect does the construction of an A.C. generator differ from that of a D.C. generator? (b) What normally drives the alternators in a Thermal Power Station? What fuels can be used to heat water in the boiler?
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 231
Topic
Name and state the rule to find the direction of : current induced in a coil due to its rotation in a magnetic field. Force experienced by a current-carrying straight conductor placed in a magnetic field which is perpendicular to it.
5 years ago
Forum
Magnetic Effects of Electric Current
Replies: 0
Views: 246
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