State whether the following statement is true or false:

The magnetic field inside a long circular coil carrying current will be parallel straight lines.

State the form of magnetic field lines around a straight current--++carrying conductor.

What is the other name of Maxwell’s right-hand thumb rule?

What is the shape of current-carrying conductor whose magnetic field pattern resembles that of a bar magnet?

State three ways in which the strength of an electromagnet can be increased.