1. In which year did Albert Einstein predict a new state of matter, Bose-Einstein condensate (BEC) in 1924, based on the quantum formulation given by Indian physicist Satyendra Nath Bose?

2. Bose–Einstein condensate (BEC) is a state of matter in which a group of boson particles are in the same quantum state.

1. French scientist Andre-Marie Ampère suggested that a magnet should also exert an equal and opposite force on a current-carrying conductor.

2. A current-carrying wire has its own magnetic field.

3. A current-carrying wire attracts a magnetic material like a normal bar magnet.

4. When the current is withdrawn or the switch is closed, there is no magnetic effect in that case.

5. This phenomenon was called the magnetic effect of current.