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List the properties of magnetic lines of force
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1
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699
|
April 4, 2019
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Explain the underlying principle and working of direct current generator (or DC dynamo) by drawing a labelled diagram
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0
|
3685
|
March 16, 2018
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|
With the help of an activity, explain the method of inducing electric current in a coil with a moving magnet. State the rule used to find the direction of electric current thus generated in the coil
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0
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22604
|
March 16, 2018
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Two circular coils P and Q are kept close to each other, of which coil P carries a current. If coil P is moved towards Q, will some current be induced in coil Q?
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0
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14384
|
March 16, 2018
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Draw an appropriate schematic diagram showing common domestic circuits and discuss the importance of fuse
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0
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7965
|
March 16, 2018
|
|
With the help of a diagram, describe an experiment to show that a change in current flowing through a coil induces an electric current in a neighbouring coil
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0
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6733
|
March 16, 2018
|
|
Explain an activity to show that a current-carrying conductor experiences a force when placed in a magnetic field
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0
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17173
|
March 16, 2018
|
|
Explain the distribution of magnetic field due to a current through a circular loop
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0
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7945
|
March 16, 2018
|
|
Briefly explain an activity to plot the magnetic field lines around a straight current carrying conductor
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0
|
9821
|
March 16, 2018
|
|
Briefly explain an activity to plot the magnetic field lines around a bar magnet. Sketch the field pattern for the same specifying field directions
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0
|
10430
|
March 16, 2018
|
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In what respect does the construction of an AC generator differ from that of a DC generator?
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0
|
2387
|
March 16, 2018
|
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A coil made of insulated copper wire is connected to a galvanometer. What will happen to the deflection of the galvanometer if this coil is moved towards a stationary bar magnet and then moved away from it?
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0
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3296
|
March 16, 2018
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Name and state the rule used for determination of direction of induced current produced in a conductor due to a changing magnetic field and give one practical application of this phenomenon in everyday life
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0
|
4760
|
March 16, 2018
|
|
What change in the deflection of the compass needle placed at a point near current carrying straight conductor shall be observed if the
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|
0
|
898
|
March 16, 2018
|
|
Explain what is short circuiting and overloading in an electric supply
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0
|
17060
|
March 16, 2018
|
|
A copper coil is connected to a galvanometer
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|
0
|
3567
|
March 16, 2018
|
|
What are magnetic field lines? How is the direction of a magnetic field at a point determined?
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0
|
5398
|
March 16, 2018
|
|
What is the direction of magnetic field lines outside a bar-magnet?
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0
|
2440
|
March 16, 2018
|
|
What is role of fuse used in series with any electrical appliance?
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0
|
731
|
March 16, 2018
|
|
How can the magnitude of the induced current be increased?
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0
|
7896
|
March 16, 2018
|
|
What is the difference between a direct current and an alternating current?
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|
0
|
2895
|
March 16, 2018
|
|
A student makes a statement that magnetic field at X is stronger than at Y. Justify this statement. Also redraw the diagram and mark the direction of magnetic field lines
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0
|
4365
|
March 16, 2018
|
|
How is the direction of magnetic field at a point determined?
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|
0
|
4179
|
March 16, 2018
|
|
How does the strength of the Magnetic field at the centre of a circular coil of a wire depend on: radius of the coil number of turns in the coil
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0
|
2990
|
March 16, 2018
|
|
A student performs an experiment to study the magnetic effect of current around a current carrying straight conductor with the help of a magnetic compass
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|
0
|
803
|
March 16, 2018
|
|
What does the divergence of magnetic field lines near the ends of a current-carrying straight solenoid indicate?
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0
|
1121
|
March 16, 2018
|
|
A magnetic compass shows deflection when placed near a current-carrying wire
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0
|
747
|
March 16, 2018
|
|
What is an electromagnet?
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|
0
|
8486
|
March 16, 2018
|
|
Write SI unit of magnetic field. Under what condition does a moving charge experience
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|
0
|
2193
|
March 16, 2018
|
|
What is electromagnetic induction?
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|
0
|
819
|
March 16, 2018
|