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प्रश्न
A magnetic field exerts no force on:
an electrical charge moving perpendicular to its direction
an unmagnetised iron bar
a stationary electric charge
a magnet
उत्तर
a stationary electric charge
Magnetic force is given by Lorentz equation as:
`F=q(VxxB)`
Here, q = amount of electric charge, V = velocity of charge and B= magnetic flux
Thus, when velocity of charge (V)=0 magnetic force (F) = 0
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संबंधित प्रश्न
The magnetic field lines produced by a bar magnet:
(a) originate from the south pole and end at its north pole
(b) originate from the north pole and end at its east pole
(c) originate from the north pole and end at its south pole
(d) originate from the south pole and end at its west pole
Fill in the following blank with suitable words:
The lines of ........... round a straight current-carrying conductor are in the shape of ...........
The strength of the magnetic field between the poles of an electromagnet would be unchanged if:
The magnetic field inside a long straight solenoid carrying current ______.
Complete the following sentence :
If the field lines in a magnetic field are parallel and equidistant, the magnetic field is __________ .
The intensity of a magnetic field is indicated by the lines of ______.
State briefly the molecular theory of magnetism.
Distinguish between
Magnetic properties of iron and steel.
The relative strength of the magnetic field at a point in the space surrounding the magnet is shown by the ____________.
Can two magnetic lines of force intersect? Justify your answer:
