When an electric current flows through a conducting wire,what is produced in the region around it?

$A$ device used for producing current is:

Explain the meanings of the words "electromagnetic" and "induction" in the term electromagnetic induction. List three factors on which the value of induced current produced in a circuit depends. Name and state the rule used to determine the direction of induced current. State one practical application of this phenomenon in everyday life.

At the centre of which of the following four circular rings has the maximum magnetic field while passing equal current through each of them?

$A$ device used for producing current is:

What is the shape of the magnetic field lines inside a solenoid?