Which of the following statements is/are correct regarding a current-carrying solenoid? I. The magnetic field inside a long straight solenoid carrying current is the same at all points. II. The magnetic field pattern of a solenoid carrying a current is similar to that of a bar magnet.

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: