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| Electrical resistance |
 The Ohm (Ω) is the unit of measurement of electrical resistance (R).
In spark plug wires this value amounts to a few thousand Ohms (Ω).
The resistance has the aim of reducing the electromagnetic interference that could be a source of problems with the car’s electronic components.
The presence of the resistors has a positive effect by reducing both the current circulating in the ignition circuit (I) and the voltage (U).
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