Some electrostatic air cleaners consist of parallel metal plates with wire electrodes ru...

Some electrostatic air cleaners consist of parallel metal plates with wire electrodes running between them as sketched in Figure P18.88. These air cleaners act by first ionizing a dust particle and then attracting it to one of the plates. If the plates are 10 cm apart and the electric potential difference between a wire and the neighboring plates is 4000 V, what is the approximate magnitude of the electric field inside the air cleaner?