Who is correct about how voltage is supplied to the coil during engine starting?

During engine starting, the supply of voltage to the coil is a critical aspect of how the ignition system operates to produce a spark for combustion. Both technicians are correct in their descriptions of the voltage supply process during this phase.

Typically, when the ignition switch is turned to the 'start' position, the battery sends a higher voltage to the ignition coil to facilitate the ignition process. This high voltage is essential because the coil transforms the low voltage from the battery into the high voltage needed to create a spark at the spark plugs. This entire process is influenced by various factors, including the ignition timing and the type of ignition system employed (e.g., conventional or distributorless ignition system). Since both technicians accurately describe aspects of this voltage supply and its operation during engine start, their statements collectively capture the correct understanding.

In contrast, if one technician had portrayed an incomplete or incorrect understanding of the voltage supply mechanism or the ignition coil's functioning, the answer would have differed. However, because both provided correct information, the answer reflects that they are both aligned in their understanding of this fundamental engine starting operation.