Class 10ScienceMagnetic Effects of Electric CurrentMix Examples - Magnetic Effects of Electric Current
MediumWhat is a solenoid? Draw the magnetic field lines for a solenoid and a bar magnet. Compare the two and state one similarity.
(N/A) solenoid is a coil of many circular turns of insulated copper wire wrapped closely in the shape of a cylinder.
The magnetic field lines for a solenoid and a bar magnet are shown in the provided image.
Comparison and Similarity:
$1$. Similarity: The pattern of magnetic field lines produced by a current-carrying solenoid is identical to that of a bar magnet. In both cases,the field lines emerge from the North pole and enter the South pole outside the magnet,and travel from South to North inside the magnet.
$2$. Comparison: $A$ solenoid acts as an electromagnet,meaning its magnetic field can be turned on or off by controlling the current,whereas a bar magnet is a permanent magnet with a constant magnetic field.
The magnetic field lines for a solenoid and a bar magnet are shown in the provided image.
Comparison and Similarity:
$1$. Similarity: The pattern of magnetic field lines produced by a current-carrying solenoid is identical to that of a bar magnet. In both cases,the field lines emerge from the North pole and enter the South pole outside the magnet,and travel from South to North inside the magnet.
$2$. Comparison: $A$ solenoid acts as an electromagnet,meaning its magnetic field can be turned on or off by controlling the current,whereas a bar magnet is a permanent magnet with a constant magnetic field.
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Similar Questions
The induced electromotive force $(EMF)$ in a conducting coil does not depend on which of the following?
Easy
View SolutionThe 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 SolutionList three sources of magnetic fields.
Medium
View Solution$(a)$ Define electromagnetic induction.
$(b)$ Two coils $P$ and $S$ are wound over the same iron core. Coil $P$ is connected to a battery and a key,and coil $S$ is connected to a galvanometer. Draw a suitable diagram of this arrangement and write your observations when:
$(i)$ current in the coil $P$ is started by closing the key.
$(ii)$ current continues to flow in coil $P$.
$(iii)$ current in coil $P$ is stopped by removing the key.
Explain the reason for such observations.
$(b)$ Two coils $P$ and $S$ are wound over the same iron core. Coil $P$ is connected to a battery and a key,and coil $S$ is connected to a galvanometer. Draw a suitable diagram of this arrangement and write your observations when:
$(i)$ current in the coil $P$ is started by closing the key.
$(ii)$ current continues to flow in coil $P$.
$(iii)$ current in coil $P$ is stopped by removing the key.
Explain the reason for such observations.
Medium
View SolutionUnder what conditions is a permanent magnet obtained if a current-carrying solenoid is used? Support your answer with the help of a labelled circuit diagram.
Medium
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