IP A spark plug in a car has electrodes separated by a gap of 2.0×10−2 inin . To create a spark and ignite the air-fuel mixture in the engine, an electric field of 2.6×106 V/mV/m is required in the gap.
What potential difference must be applied to the spark plug to initiate a spark?
If the separation between electrodes is increased, does the required potential difference increase, decrease, or stay the same?
Find the potential difference for a separation of 4.0×10−2 inin .