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

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

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

Fill in the following blanks with suitable words:

(a) The lines of _____ round a straight-carrying conductor are in the shape of _____

(b) For a current-carrying solenoid, the magnetic field is like that of a _____

(d) The magnetic effect of a coil can be increased by increasing the number of _____, increasing the _____ or inserting an _____ core.

(e) If a coil is viewed from one end and the current flows in an anticlockwise direction, then this end is a _____ pole.

(f) If a coil is viewed from one end, and the current flows in a clockwise direction, then this end is a _____ pole.