A current carrying wire is placed horizontally in a magnetic field with north pole in upward and south pole in downward direction. The wire is deflected towards south direction. The direction of electrons in the wire is:

Correct option is A

current-carrying wire is placed horizontally in a magnetic field with the north pole upward and the south pole downward, and the wire is deflected towards the south. We need to find the direction of the electrons in the wire.

• Thumb: Indicates the direction of the force (deflection of the wire, which is towards the south).
• First finger (index finger): Indicates the direction of the magnetic field (from north to south, i.e., upward to downward).
• Second finger (middle finger): Indicates the direction of the current.

Since the wire is deflected towards the south, the current must be flowing from east to west.

• The flow of electrons is opposite to the direction of the conventional current.
• Since the current is flowing from east to west, the electrons are flowing from west to east.

The direction of electrons in the wire is from east to west.