Fleming's right-hand rule: the mnemonic picture
The right hand should be held, as shown below, with the thumb, first finger and second finger all held at 90° to each other.
(NOTE: a "mnemonic" picture is a picture that helps you remember something. Mammoth Memory has thousands of them!)
Your first finger should be placed in line with the direction of the magnetic field (i.e. north to south).
The thumb should be placed in line with the direction the wire will be physically moving.
The second finger will now show you the direction the induced electrical current will move through the wire.
Using Fleming's right-hand rule, we can predict here that if we move the wire through the magnetic field as shown then the induced current will flow in the direction the second finger is pointing.
To prove this we can now confirm if our prediction is correct by using the galvanometer.
Yes, the current is moving in the direction predicted.
