The independent variables in part i, the ones intentionally manipulated, are the
the independent variable in part ii, the one that is intentionally manipulated, is the
the dependent variable for both parts i and ii, the one that you measure the response in, is the

The electric field between square plates of a parallel-plate capacitor has magnitude e. the potential across the plates is maintained with constant voltage by a battery as they are pulled apart to twice their original separation, which is small compared to the dimensions of the plates. the magnitude of the electric field between the plates is now equal to a)e b)e/4 c)e/2 d)4e e)2e