List two methods of producing magnetic fields.

Solution:

Following are the methods of producing magnetic fields:

• By using a permanent magnet, we can produce a magnetic field, and it can be visualized by spreading iron fillings on white paper and keeping a magnet beneath the paper.
• A current-carrying straight conductor produces magnetic field.
• Different types of conductors, such as solenoid and circular loops, can be used to see the presence of a magnetic field.