NCERT Class 10 Science Chapter 13 Activity 13.5 Solution
In this article,
we will discuss activity
13.5 class 10 science
with a complete explanation with a conclusion.
After studying
this activity 13.5 Class 10 Science Chapter 13 Magnetic Effects of Electric Current,
you will be able to solve Questions based on this activity 13.5.
Activity 13.5 Class 10 Science Chapter 13
·
Take a battery (12V) , a
variable resistance or rheostat, an ammeter(0-5A), a plug key, and a long
straight thick copper wire.
·
Insert the thick wire
through the center, normal to the plane of rectangular cardboard. Take care
that the cardboard is fixed and does not slide up and down.
·
Connect the copper wire
vertically between points X and Y, as shown in the figure in series with
the battery, and a plug key.
·
Sprinkle some iron
filings uniformly on the cardboard. (You may use a salt sprinkler for this
purpose)
· Keep the variable of the
rheostat at a fixed position and note the current through the ammeter.
·
Close the key so that a
current flows through the wire. Ensure that the copper wire placed between points X and Y remains vertically remains.
·
Gently tap cardboard a
few times. Observe the pattern of the iron filings. You would find that the
iron filings align themselves showing a pattern of concentric circles around
the copper wire.
·
What do these concentric
circles represent? They represent the magnetic field lines.
·
How can the direction of
the magnetic field lines be found? Place a compass at a point say P over a
circle. Observe the direction of the needle. The direction of the north pole of
the compass needle would give the direction of the field lines produced by the
electric current through the straight wire at point P. show the direction by an
arrow.
·
Does the direction of
magnetic field lines get reversed if the direction of current through the
straight copper wire is reversed? Check it.
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Activity 13.5 Class 10 Science Observation
Iron filings get arranged in concentric circles
around the straight conductor.
Activity 13.5 Class 10 Science Explanation
When we sprinkle iron filings on the cardboard
around the straight copper wire, the iron filings arrange themselves in concentric circles around the
conductor.
These concentric circles represent magnetic field lines.
When we place a compass needle on these concentric circles, it experiences a
force and starts deflecting.
So, the deflection of the compass needle shows
that a magnetic field is produced around a current carrying a straight conductor.
When the direction of electric current in the conductor
is reversed, the direction of magnetic field lines also gets reversed.
When eh current flows in a conductor in an upward direction then the direction of magnetic field lines are anticlockwise and when the direction of current is in a downward
direction then the direction of magnetic field liens gets reversed(clockwise).
The
direction of the magnetic field can be found through the Right-Hand Thumb Rule.
Activity 13.5 Class 10 Science Conclusion
It is concluded through activity 13.5 that a
magnetic field is produced around a current carrying conductor. The direction
of the magnetic field gets reversed when the direction of the current is reversed.
Related Topics for you
1. Activity 13.6 Class 10 Science
2. Activity 13.4 Class 10 Science
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