Practice question

In a conventional petrol ignition system, what is the function of the ignition coil?

  1. To lower battery voltage for the lights
  2. To step up the low battery voltage to the high voltage needed to jump the spark plug gap
  3. To store fuel under pressure
  4. To cool the spark plugs

Answer: B — To step up the low battery voltage to the high voltage needed to jump the spark plug gap

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