If a long hollow copper pipe carries a current, the magnetic field produced will be

If a long hollow copper pipe carries a current, then magnetic field is produced:

A long hollow copper pipe carries a current. Then, the magneic field product is

If a long hollow copper pipe carriers a direct current, the magnetic field associated with the current will be:

If a long hollow copper pipe carriers a direct current, the magnetic field associated with the current will be:

If a long hollow copper pipe carriers a direct current, the magnetic field associated with the current will be:

If a long hollow copper pipe carriers a direct current, the magnetic field associated with the current will be: