|
Explain the working of electric motor with a neat diagram
|
|
1
|
168430
|
June 16, 2017
|
|
A circular coil of radius 10 cm
|
|
1
|
1556
|
October 21, 2016
|
|
A charged particle q' is moving with a speed V
|
|
1
|
2013
|
October 21, 2016
|
|
Can we make use of this current ? If so, how?
|
|
0
|
628
|
October 21, 2016
|
|
Can you guess the reason for variation of current from zero to maximum and vice-versa during the rotation of coil?
|
|
0
|
925
|
October 21, 2016
|
|
How could we use the principle of electromagnetic
|
|
1
|
2472
|
October 21, 2016
|
|
Can you guess what could be the direction of induced current in the coil in such case?
|
|
0
|
600
|
October 21, 2016
|
|
If D.C. is used, the metal ring lifts up and falls down immediately. Why?
|
|
0
|
1051
|
October 21, 2016
|
|
What happens to the rotation of the coil if the direction of current in the coil remains unchanged?
|
|
0
|
1548
|
October 21, 2016
|
|
Are these field lines closed loops or open loops?
|
|
0
|
614
|
October 21, 2016
|
|
Why does the needle get deflected by the magnet?
|
|
0
|
600
|
October 21, 2016
|
|
How do electromagnets work?
|
|
0
|
548
|
October 21, 2016
|
|
How do they (most of the appliances) work?
|
|
0
|
533
|
October 21, 2016
|
|
Have you ever thought, from where do we get electrical energy?
|
|
0
|
498
|
October 21, 2016
|
|
How could we use the principle of electro magnetic induction in the case of using ATM card?
|
|
0
|
4107
|
October 21, 2016
|
|
Explain electromagnetic induction
|
|
0
|
1243
|
October 21, 2016
|
|
Explain the field lines due to horse-shoe magnet between its poles
|
|
0
|
2925
|
October 21, 2016
|
|
Explain magnetic force on moving charge and current carrying wire?
|
|
0
|
1551
|
October 21, 2016
|
|
Explain the magnetic field due to solenoid
|
|
0
|
1486
|
October 21, 2016
|
|
Explain the direction of magnetic field due to circular coil
|
|
0
|
1694
|
October 21, 2016
|
|
Explain the direction of magnetic field around the straight conductor carrying current
|
|
0
|
1268
|
October 21, 2016
|
|
Explain how you draw magnetic lines of force in the magnetic field
|
|
0
|
2916
|
October 21, 2016
|
|
Why is a spark produced at the place of short circuit ? Why is the spark is of white colour?
|
|
0
|
1867
|
October 21, 2016
|
|
State two serious hazards of electricity
|
|
0
|
1506
|
October 21, 2016
|
|
How would you demonstrate the presence of an induced emf in the absence of a Galvanometer?
|
|
0
|
1469
|
October 21, 2016
|
|
What is the difference between AC generator and DC generator?
|
|
0
|
2855
|
October 21, 2016
|
|
How a metal detector works?
|
|
0
|
519
|
October 21, 2016
|
|
What is the direction of force acting on a negative charge moving in a field?
|
|
0
|
1677
|
October 21, 2016
|
|
Why the magnetic field drawn is non-uniform?
|
|
0
|
547
|
October 21, 2016
|
|
Who proposed that a magnetic field is present in a current carrying wire?
|
|
0
|
571
|
October 21, 2016
|