A magnetic compass is placed near a current carrying wire. What will you observe?
Or
A magnetic compass shows a deflection near a current carrying wire. How will the deflection of the compass get affected if current in the wire is increased? Support your answer with reason.
• We observe that the deflection of the needle of the magnetic compass increases. This is because the magnetic field strength due to a current carrying wire increases, when current in the wire is increased. • We observe that the deflection of the needle of the magnetic compass decreases. This is because the magnetic field strength due to a current carrying wire decreases with the increase of the distance from the wire.