The magnitude of an $AC$ voltage used in India is $......$ and its frequency is $......$.

Appliances with higher power ratings are connected to which ampere line (in $A$)?

Explain what is short circuiting and overloading in an electric supply.

If field lines of a magnetic field are crossed at a point,what does it indicate?

Draw magnetic field lines produced around a current-carrying straight conductor passing through a cardboard. How will the strength of the magnetic field change when the point where the magnetic field is to be determined is moved away from the straight wire carrying a constant current? Justify your answer.

Identify the poles of the magnet in the given figure.