Class 10ScienceMagnetic Effects of Electric CurrentMix Examples - Magnetic Effects of Electric Current
MediumWhat are permanent magnets and electromagnets? Give two uses of each.
(N/A) permanent magnet is a material that retains its magnetic properties for a long time without the need for an external power source. Its magnetic field is constant.
An electromagnet is a temporary magnet formed by passing an electric current through a coil (solenoid) wound around a soft iron core. Its magnetism exists only as long as the current flows.
Uses of Permanent Magnets:
$1$. Electric generators
$2$. Loudspeakers
Uses of Electromagnets:
$1$. Electric cranes for lifting heavy iron objects
$2$. Electric bells
An electromagnet is a temporary magnet formed by passing an electric current through a coil (solenoid) wound around a soft iron core. Its magnetism exists only as long as the current flows.
Uses of Permanent Magnets:
$1$. Electric generators
$2$. Loudspeakers
Uses of Electromagnets:
$1$. Electric cranes for lifting heavy iron objects
$2$. Electric bells
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Similar Questions
The diagram below shows a circuit containing a coil wound over a long and thin hollow cardboard tube. Copy the diagram and:
$(i)$ Show the polarity acquired by each face of the solenoid.
$(ii)$ Draw the magnetic field lines of force inside the coil and also show their direction.
$(iii)$ Mention two methods to increase the strength of the magnetic field inside the coil.
$(i)$ Show the polarity acquired by each face of the solenoid.
$(ii)$ Draw the magnetic field lines of force inside the coil and also show their direction.
$(iii)$ Mention two methods to increase the strength of the magnetic field inside the coil.
Medium
View SolutionWhat are the factors on which the magnetic field due to a current carrying solenoid depends?
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View SolutionWhat is meant by electromagnetic induction? State the rule which helps in determining the direction of induced current.
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View Solution$(a)$ $A$ coil of insulated copper wire is connected to a galvanometer. What will happen if a bar magnet is:
$(i)$ pushed into the coil with its north pole entering first?
$(ii)$ withdrawn from inside the coil?
$(iii)$ held stationary inside the coil?
$(b)$ Name the above phenomenon and mention the name of the scientist who discovered it. State the law that relates the direction of current in the coil with the direction of motion of the magnet.
$(i)$ pushed into the coil with its north pole entering first?
$(ii)$ withdrawn from inside the coil?
$(iii)$ held stationary inside the coil?
$(b)$ Name the above phenomenon and mention the name of the scientist who discovered it. State the law that relates the direction of current in the coil with the direction of motion of the magnet.
Medium
View SolutionWhich scientist discovered that an electric current can be produced using a magnetic field?
Easy
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