A student builds a simple circuit with a single resistor of resistance 2R2R2, R and current III, and measures an electric potential difference of \Delta V_1ΔV 1 delta, V, start subscript, 1, end subscript across the resistor. Then, the student decreases the current through the circuit to \dfrac{I}{2} 2 I start fraction, I, divided by, 2, end fraction.
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A student builds a simple circuit with a single resistor of resistance 2R2R2, R and current III, and...
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