Two large, parallel, current-carrying plates are oriented horizontally and the vertical distance between them is 5.0 mm. the current per unit width in each plate is 150 a/m , and both currents are in the positive x direction.
determine the magnitude of the magnetic force per unit area exerted by the lower plate on the upper plate.

    force per unit area  = 0.0141 N/m²

Explanation:

given,

vertical distance = 5.0 mm

current per unit width = 150 A/m

force

now,

                                              =  

            force per unit area  = 0.0141 N/m²

the pull of gravity on the rocket decreases

answer: option c. i.e. electric current flowing “downhill” from the negative electrode to the positive electrode in a battery

explanation:

the water analogy to the circuits define the pipes (water flows) to the electric current. now, we know that the electric current flows from the positive terminal to the circuit (as shown in the diagram attached).

hence, option c is the correct answer.