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प्रश्न
What are magnetic field lines?
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उत्तर
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संबंधित प्रश्न
What are the two ways in which you can trace the magnetic field pattern of a bar magnet?
You are given the magnetic field pattern of a magnet. How will you find out from it where the magnetic field is the strongest?
The magnetic field lines:
(a) intersect at right angles to one another
(b) interest at an angle 45° to each another
(c) do not cross one another
(d) cross at an angle of 60° to one anotherv
State four properties of magnetic field lines.
Which substances are used for making electromagnets?
Select the correct option:
A bar magnet is rubbed on a bar of steel along its length 20 times. The bar of steel gets magnetised due to the process of:
Select the correct option:
The magnetic strength of a bar magnet is:
A charge moving in a magnetic field, in a direction other than the direction of the magnetic field, experiences a force. It is called the ______ force.
When the conductor is perpendicular to the magnetic field, the force will be the ______, When it is parallel to the magnetic field, the force will be ______.
A wire 10 cm long carrying a current of 1.5 A is held in a uniform magneÑic field in which B = 10-3 T. Calculate the force on the wire if it is held perpendicular to the lines of the magnetic field.
