Question on Electromagnatic Induction

1. The problem statement, all variables and given/known data
9 volt battery
1 Nail
Few paper clips
Cooper Wire

2. Relevant equations
Why my Electromagnetic Induction experiment failed ? It did not create electromagnetic field to attract surrounding paper clips. What are missing here ? How to do successful home-made electromagnetic Induction ? Please help.

3. The attempt at a solution
Made 75 rounds around the Nail to create Solenoid.
Wire connected to battery + –
Turned on the switch

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