What effect will there be on a magnetic compass when it is brought near a current carrying solenoid?
The needle of the compass will get deflected and will rest in the direction of the resultant magnetic field at that point.
Electricity and magnetism are said to be inter-related to each other. A current carrying conductor has a magnetic field around it. So, when a compass is brought near to it, we can observe a deflection in the compass. Similarly, a battery is the source of the electric current. What will be the deflection, when we bring a compass near a 3 V cell (battery)?
The needle of a compass does not deflect when it is brought near a current carrying conductor.