A small insulating sphere of mass \(m\) and positive charge \(+q\) is suspended by a light, nonconducting thread of length \(L\) between two large vertical parallel plates separated by a distance \(d\). A constant potential difference \(\Delta V\) is maintained across the plates, establishing a uniform horizontal electric field to the right. The sphere hangs in static equilibrium such that the thread makes a constant angle \(\theta\) with the vertical line through the suspension point. Which of the following expressions correctly represents the magnitude of the tension \(F_T\) in the thread in terms of \(m\), \(g\), \(q\), \(\Delta V\), \(d\), and \(\theta\)?