Answer:
a) 
b) 
Explanation:
From the question we are told that:
Wire Length 
Resistance 
Force 
Power 
a)
Generally the equation for Power is mathematically given by

Therefore



b)
Generally the equation for Magnetic Field is mathematically given by



Magnets don’t need to touch each other in order to be magnetic because all objects have an attraction however, the closer the magnets get, the more magnetic it is.
<span>Changes in the forms of energy are called "Energy Conversions"
Hope this helps!</span>