Answer:
A. MA=force output/force input
Explanation:
mechanical advantage is the ratio of the load to the effort
Electromagnet is in form of solenoid
and the magnetic field due to solenoid is given as

here
i = current in the loop
so when we increase the current in electromagnet the magnetic field of the solenoid will increase
this will increase the strength of the electromagnet
so the answer would be
<em>INCREASE</em>
Um ok so you subtract 2 on both side the plug in 6
Path 2.
Displacement is the direction and magnitude of an object from its starting point, so path 2 is the direct route you would need to take to find direction and magnitude.
Switch because look A switch detects the speed that given device can handle and communicates with it at that speed