An electromechanical relay has a coil voltage rating of 5 volts and a coil resistance of 150 ohms. However, you desire to energize this relay with a 12 volts car battery. You know that a series connected resistor might enable the 5 volt relay coil to be powered by by the 12 volt battery without damage, what size of resistor would be appropriate for the task
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An electromechanical relay has a coil voltage rating of 5 volts and a coil resistance of 150 ohms. H...
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