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List the properties of magnetic lines of force
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1
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749
|
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
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3793
|
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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22688
|
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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14465
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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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8059
|
March 16, 2018
|
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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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6783
|
March 16, 2018
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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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17275
|
March 16, 2018
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Explain the distribution of magnetic field due to a current through a circular loop
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0
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8012
|
March 16, 2018
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|
Briefly explain an activity to plot the magnetic field lines around a straight current carrying conductor
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0
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9962
|
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
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10516
|
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
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2428
|
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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3332
|
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
|
4799
|
March 16, 2018
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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
|
927
|
March 16, 2018
|
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Explain what is short circuiting and overloading in an electric supply
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0
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17114
|
March 16, 2018
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|
A copper coil is connected to a galvanometer
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0
|
3611
|
March 16, 2018
|
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What are magnetic field lines? How is the direction of a magnetic field at a point determined?
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0
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5455
|
March 16, 2018
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What is the direction of magnetic field lines outside a bar-magnet?
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0
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2482
|
March 16, 2018
|
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What is role of fuse used in series with any electrical appliance?
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0
|
762
|
March 16, 2018
|
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How can the magnitude of the induced current be increased?
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0
|
7939
|
March 16, 2018
|
|
What is the difference between a direct current and an alternating current?
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0
|
2958
|
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
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4434
|
March 16, 2018
|
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How is the direction of magnetic field at a point determined?
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0
|
4310
|
March 16, 2018
|
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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
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3021
|
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
|
831
|
March 16, 2018
|
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What does the divergence of magnetic field lines near the ends of a current-carrying straight solenoid indicate?
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0
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1157
|
March 16, 2018
|
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A magnetic compass shows deflection when placed near a current-carrying wire
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0
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782
|
March 16, 2018
|
|
What is an electromagnet?
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0
|
8522
|
March 16, 2018
|
|
Write SI unit of magnetic field. Under what condition does a moving charge experience
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0
|
2249
|
March 16, 2018
|
|
What is electromagnetic induction?
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0
|
847
|
March 16, 2018
|