Answer:
Hence, the three effects of electric current are heating effect, magnetic effect and chemical effect.
I attached a photo that explains and gives the answer to your questions. Had to add a border because the whole picture didn’t fit.
The answer mostly likely is: “1” due to the fact it is well ordered, and follows a similar thought process, best of luck!
Answer:

So the bouy does not float with its axis vertical
Explanation:
From the question we are told that:
Diameter 
Length 
Weight 
Specific weight of sea water 
Generally the equation for weight of cylinder is mathematically given by
Weight of cylinder = buoyancy Force

Where

Therefore

Therefore
Center of Bouyance B

Center of Gravity

Generally the equation for\BM is mathematically given by

Therefore

Therefore

Therefore

So the bouy does not float with its axis vertical