Which of these is a complex number? A. 8/3 + sqrt-7/3

B. 9+3 sqrt5 /2

C. 2- 1/sqrt11

D. 5 sqrt1/3 - 9/sqrt7

first you will complete your question ❓

Option A is complex number because it is denoted by i and j

step-by-step explanation:

we can use this expression to calculate the energy gain as a particle moves with a field or the energy loss as it moves against it. (note that it is also used to define the electron-volt, a unit of energy equal to that gained by an electron as it falls through a pd of 1 v, i.e. w = 1 ev = 1.6 10-19 c 1 v = 1.6 10-19j).in fact this expression is really nothing more than the statement that potential is the potential energy per unit charge. in this case, v= w/qis simply stating that the change in potential energy(or work done) per unit charge is equal to the change in potential (or potential difference), v.student questions: uniform electric fields2electron beamcathode+5 kvanode0 v