Assertions (A) - a compass needle is placed near a current carrying wire , the deflection of the compass needle decreases when the magnitude in the electric current in the wire is incresed Reason(R) -strength of magnetic field at a point near the conductor increases on increasing the current.
Option :-
1.both A and R are true and r is the correct explanation of A
2.both A and R are true and r is not the correct explanation of A
3.A is true but R is false
4.A is false but R is true
Answers
Answer: 1.both A and R are true and R is the correct explanation of A. The assertion that the deflection of the compass needle decreases when the magnitude of the electric current in the wire is increased is true, and the reason given that the strength of the magnetic field at a point near the conductor increases on increasing the current is also true and correct explanation of the assertion.
Explanation: The assertion that the deflection of the compass needle decreases when the magnitude of the electric current in the wire is increased is true, and the reason given that the strength of the magnetic field at a point near the conductor increases on increasing the current is also true and correct explanation of the assertion.
As the current in the wire increases, the magnetic field created by the wire gets stronger, but the deflection of the compass needle gets weaker due to the increase in distance caused by the increased current. Therefore, the assertion that the deflection of the compass needle decreases when the magnitude of the electric current in the wire is increased is true, and the reason given that the strength of the magnetic field at a point near the conductor increases on increasing the current is also true and correct explanation of the assertion.
When a current carrying wire is placed near a compass needle, the needle gets deflected due to the magnetic field created by the current flowing in the wire. The direction of the deflection of the compass needle is determined by the direction of the current and the direction of the needle. The magnitude of the deflection is determined by the strength of the magnetic field.
To learn more about electric current from the link below
https://brainly.com/question/1100341
To learn more about magnetic field from the link below
https://brainly.in/question/5655710
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Answer:
ASSERTION IS FALSE BUT THE REASON IS TRUE.
HOPE THIS HELPS!!!!