|
Write one difference between A.C and D.C
|
|
2
|
12584
|
April 12, 2020
|
|
(a) What is a magnetic field? How can the direction of magnetic field lines at a placed by determined?
|
|
1
|
931
|
April 4, 2019
|
|
(a) What is a solenoid? Draw a sketch of the pattern of field lines of the magnetic field
|
|
1
|
1326
|
April 4, 2019
|
|
(a) Describe with diagram an experiment to show that a force is exerted on a current carrying conductor
|
|
1
|
7779
|
April 4, 2019
|
|
1. What is an electromagnet?
|
|
1
|
2496
|
April 4, 2019
|
|
(i) What is an electromagnet? What does it consist of?
|
|
1
|
3952
|
April 4, 2019
|
|
State ‘Fleming’s Right-Hand Rule’. With a labelled diagram, describe the working of on A.C electric generator
|
|
1
|
3744
|
April 4, 2019
|
|
1. What are ‘magnetic field lines’? How is the direction of a magnetic field at a point determined?
|
|
1
|
3435
|
April 4, 2019
|
|
(a) How is the direction of electric current related to the direction of flow of electrons in a wire?
|
|
1
|
8182
|
April 4, 2019
|
|
State whether an alpha particle will experience any force in a magnetic field
|
|
1
|
3969
|
April 4, 2019
|
|
A coil of insulated copper wire is connected to a galvanometer. (i) pushed into the coil
|
|
1
|
2658
|
April 4, 2019
|
|
How does a solenoid behave like a magnet?
|
|
1
|
2694
|
April 4, 2019
|
|
Think you are sitting in a chamber with your back to one wall
|
|
1
|
1203
|
April 4, 2019
|
|
Magnetic lines of force of two pairs of magnets are shown in figure A and B, Out of these two figures
|
|
1
|
6450
|
April 4, 2019
|
|
(i) the direction of deflection of the north pole of a compass needle kept at the given point
|
|
1
|
3819
|
April 4, 2019
|
|
(i) The degree of deflection of the magnetic compass increases when the compass in moved away from the conductor
|
|
1
|
2603
|
April 4, 2019
|
|
(i) The force experienced by the conductor increases as the current is increased
|
|
1
|
1974
|
April 4, 2019
|
|
What is a solenoid? Draw the pattern of magnetic field lines of a solenoid through which a steady current flows
|
|
1
|
15411
|
April 4, 2019
|
|
A coil made of insulated copper wire is connected to a galvanometer
|
|
1
|
684
|
April 4, 2019
|
|
An a-particle enters a uniform magnetic field at right angles to it as shown in figure
|
|
1
|
17550
|
April 4, 2019
|
|
Draw a diagram to show how a magnetic needle deflects
|
|
1
|
3147
|
April 4, 2019
|
|
An electric fuse of rating 3A is connected in a circuit in which an electric iron of power 1kW is connected
|
|
1
|
10704
|
April 4, 2019
|
|
What is the basic difference between A.C generator and D.C generator?
|
|
1
|
732
|
April 4, 2019
|
|
A magnetic compass shows a deflection near a current carrying wire
|
|
1
|
775
|
April 4, 2019
|
|
A proton enters a magnetic field at right angles to it as shown in figure
|
|
1
|
10389
|
April 4, 2019
|
|
Why does a current carrying conductor kept in a magnetic field experience force?
|
|
1
|
1143
|
April 4, 2019
|
|
What is the function of an earth wire? Why is it necessary to earth metallic casings of electric appliances?
|
|
1
|
1184
|
April 4, 2019
|
|
What is meant by the term, “magnetic field”?
|
|
1
|
2103
|
April 4, 2019
|
|
What is the role of split ring in an electric motor?
|
|
1
|
1658
|
April 4, 2019
|
|
Why not two magnetic lines of force intersect each other?
|
|
1
|
2207
|
April 4, 2019
|