The discussion confirms that resistors do have electric fields within them, which are a result of charge accumulation at their endpoints. The potential difference across a resistor is directly linked to the electric field inside it, as defined by the equation V = Ed, where V represents voltage, E is the electric field strength, and d is the length of the resistor. This relationship clarifies that the electric field exists along the length of the resistor, not just on its surface.
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So if a resistor had length L, I could use the V=Ed equation to obtain the E field?CrazyNinja said:Yes, they do. Voltage ( better to say potential difference) is always caused due to accumulation of charges. The potential difference across a resistor is due to the electric field inside it, which is caused by accumulation of charges at its end points.