A compass needle is placed near a current carrying wire. State your observation for
the following cases, and give reason for the same in each case.
a) Magnitude of electric current in the wire is increased.
b) The compass needle is displayed away from the wire.
OR
a) State the rule to find the direction of magnetic field associated with a straight
current carrying conductor.
b) Draw the magnetic field lines of a straight current carrying conductor.
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b) Draw the magnetic field lines of a straight current carrying conductor.
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