Read the following statements and choose the correct option: Assertion (A): When an electric current passes through a wire, it behaves like a magnet. Reason (R): Wires used in electrical circuits are usually made up of ferromagnetic materials.

How does the magnetic field at a distance r from an infinitely long wire change if the current is doubled?

The force on a current-carrying conductor in a magnetic field is maximum when _____.

An electron moves vertically downwards into a magnetic field directed towards the right. According to Fleming's Left-Hand Rule, the direction of the magnetic force acting on the electron will be: