Nothing will happen to the magnetic field.
BUT If you're talking about the magnetic force , then when changing the current direction , the direction of the magnetic force will be reversed.
(You'ld like to know :
-Changing direction of current ONLY , reverses the direction of magnetic force.
-Changing direction of Magnetic field only (poles of magnet) , reverses the direction of magnetic force.
-Changing the direction of both , magnetic field and current , doesn't effect direction of magnetic force.)
N.B : Magnetic Force is experienced only when direction of current is PARALLEL to direction of magnetic field .
--> Flemming Left Hand Rule is used to know direction of magnetic force.
Hope This Helps.
Modern dual-processing theory is the idea that our minds have conscious and unconscious tracks. A
Answer:
Part (a) The magnitude of the deflection of electron beam on the screen due to the Earth's gravitational field is 5.97*
m.
Part (b) The magnitude of the deflection of electron beam on the screen due to the vertical component of the Earth's magnetic field is 
m
<span>The characteristics of Object X most closely resemble those of other Comets. The correct option among all the options that are given in the question is the first option. The other options in the question can be negated. I hope that this is the answer that has actually come to your great help.</span>
125 W is the power output of this machine.
Answer:
Explanation:
Power is defined as the amount of work done on the system to move that system from its original state within the given time interval. So it can be determined by the ratio of work done with time interval. As work done is the measure of force required to move a system to a certain distance. Work done is calculated as product of force with displacement.
So in the present case, the force is given as 100 N, the displacement is given as 5 m and the time is given as 4 s, then power is
As Work done = Force acting on the machine × Displacement
So 
Power = 
=125 W
So, 125 W is the power output of this machine.
