Advertisements
Advertisements
प्रश्न
What conclusion is drawn regarding the magnetic field at a point if a compass needle at that point rests in any direction? Give reason for your answer.
Advertisements
उत्तर
If a compass needle rests in any direction (i.e., it does not align consistently in one direction), then the magnetic field at that point is zero or very weak.
A compass needle aligns itself along the direction of the net magnetic field present at a point (typically Earth's magnetic field). If no magnetic field is present, or if two or more magnetic fields cancel each other out, the needle has no preferred direction and may rest in any random position.
APPEARS IN
संबंधित प्रश्न
State whether the following statement is true of false:
The axis of earth's imaginary magnet and the geographical axis coincide with each other.
In the straight wire A, current is flowing in the vertically downwards direction whereas in wire B the current is flowing in the vertically upward direction. What is the direction of magnetic field:
(a) in wire A?
(b) in wire B?
Name the rule which you have used to get the answer.
Select the correct option:
Nickel is a:
Define the isoclinic line.
State briefly the molecular theory of magnetism.
Draw diagram showing the arrangement of the lines of force for two magnets in line, with unlike poles facing one another.
Complete the following diagram of magnets to show the lines of force.
Complete the following diagram of magnets to show the lines of force.
______ is the number of magnetic field lines passing through a given area.
The magnetic field lines are stronger near the ______ and it diminishes as you go away from it.
