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Explain the working of electric motor with a neat diagram
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1
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167942
|
June 16, 2017
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A circular coil of radius 10 cm
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1
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1455
|
October 21, 2016
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A charged particle q' is moving with a speed V
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1
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1938
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October 21, 2016
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Can we make use of this current ? If so, how?
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0
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600
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October 21, 2016
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Can you guess the reason for variation of current from zero to maximum and vice-versa during the rotation of coil?
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0
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884
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October 21, 2016
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How could we use the principle of electromagnetic
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1
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2428
|
October 21, 2016
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Can you guess what could be the direction of induced current in the coil in such case?
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0
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565
|
October 21, 2016
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If D.C. is used, the metal ring lifts up and falls down immediately. Why?
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0
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1002
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October 21, 2016
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What happens to the rotation of the coil if the direction of current in the coil remains unchanged?
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0
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1450
|
October 21, 2016
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Are these field lines closed loops or open loops?
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0
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576
|
October 21, 2016
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Why does the needle get deflected by the magnet?
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0
|
559
|
October 21, 2016
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How do electromagnets work?
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0
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517
|
October 21, 2016
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How do they (most of the appliances) work?
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0
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500
|
October 21, 2016
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Have you ever thought, from where do we get electrical energy?
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0
|
467
|
October 21, 2016
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How could we use the principle of electro magnetic induction in the case of using ATM card?
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0
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4066
|
October 21, 2016
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Explain electromagnetic induction
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0
|
1183
|
October 21, 2016
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Explain the field lines due to horse-shoe magnet between its poles
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0
|
2783
|
October 21, 2016
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Explain magnetic force on moving charge and current carrying wire?
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0
|
1467
|
October 21, 2016
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Explain the magnetic field due to solenoid
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0
|
1394
|
October 21, 2016
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Explain the direction of magnetic field due to circular coil
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0
|
1632
|
October 21, 2016
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Explain the direction of magnetic field around the straight conductor carrying current
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0
|
1187
|
October 21, 2016
|
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Explain how you draw magnetic lines of force in the magnetic field
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0
|
2783
|
October 21, 2016
|
|
Why is a spark produced at the place of short circuit ? Why is the spark is of white colour?
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0
|
1799
|
October 21, 2016
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State two serious hazards of electricity
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0
|
1461
|
October 21, 2016
|
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How would you demonstrate the presence of an induced emf in the absence of a Galvanometer?
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0
|
1426
|
October 21, 2016
|
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What is the difference between AC generator and DC generator?
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0
|
2816
|
October 21, 2016
|
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How a metal detector works?
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0
|
487
|
October 21, 2016
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What is the direction of force acting on a negative charge moving in a field?
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0
|
1641
|
October 21, 2016
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Why the magnetic field drawn is non-uniform?
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0
|
510
|
October 21, 2016
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Who proposed that a magnetic field is present in a current carrying wire?
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0
|
544
|
October 21, 2016
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