A spark plug in a car has electrodes separated by a gap of 0.025inches. To create a spark and ignite the air-fuel mixture in the engine, an electric field of 3.0 x 106 V/m is required in the gap. (a) What potential difference must be applied to the spark plug to initiate a spark? (b) If the separation between electrodes is increased, does the required potential difference increase, decrease, or stay the same. (c) Find the potential difference for a separation of 0.050” delta V= -E delta s E=Kq/r^2 r = distance s = distance delta V= potential difference E=electric field intensity K=9.0x10^9 q= charge ive done the a section easy enough, but i have some questions about the b/c sections. because the electrodes are seperating, will that also effect the electric field intensity.