Two equilateral triangular parallel plates (side length = 50mm) facing each other
experiences a flux of 900Nm2/C . If a
phosphorus nucleus is placed the
positively-charged plate, what is the
velocity of the nucleus as it traverses the
electric field if the distance between the
plates is 60nm. Assume that the electric
field is perpendicular to the triangular
plates.

the answer would be   dignified - apex

adding a(n) to an electric circuit would increase the magnetic field around a wire;

b. solenoid

a solenoid is a type of electromagnet whose purpose is to generate a controlled magnetic field.

if the purpose of the solenoid is instead to impede changes in the electric current, a solenoid can be more specifically classified as an inductor rather than an electromagnet.