Question

how can the magnetic field produced around a current carrying conductor be detected

Answer 1

your answer is in the image

Answer 2

Answer:

• There are different ways to detect magnetic field acting around a conductor (that has current flowing in it) one of the way is to take a conductor that has current flowing in it.
• And bring it near a compass since we know a compass always points towards north and has certain magnetic field in it, the change in the arrow of compass  would mean it has another magnetic field acting near it.
• And this is the thing that happens when we bring a current carrying conductor near the compass which tells us that the conductor has an acting magnetic field around it.