Quote:
Originally Posted by WNDSRFR
No voltage will be the same throughout the circuit. The current will vary with load.
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Oh boy, even an a perfect circuit you will have a voltage drop across the conductor. In a defective circuit you will have a voltage drop across the defective component(wire, relay, fuse, ect) due to its resistance. This will lower the voltage to the end component (load). Yes the current will vary with load however the current will be the same throughout the entire circuit. Now the voltage will be divided up across all components in the system. If you have 12v at the battery and the relay has high resistance and has a 4v drop across, plus in a high current situation you have a 1v drop across the wire that means only 7v is getting to the starter motor.