Please explain the questions and give questions and examples using the equations written below the questions.

2. A current balance is a device which allows current to flow along two parallel metal bars in such a way that the magnetic force between them cancels out the weight of some known mass placed on the upper bar. Assuming that the weight of the bars themselves has already been balanced, write down an expression which relates the mass of a small weight placed on the top bar to the current, length, and distance between the bars. Ma the same wite 2 TT IL XB ex two wited with I Same sitection: out of the board . . into ma - ( I)LB you pick one and the other feels it