(D) 150V Which of the following situations would increase the electrical resistance of a circuit consisting of A) decrease the length of the copper wire (B) increase the temperature (c) increase the thickness of the wire (D) change the wiring to copper

The correct answer is (B) increase the temperature.<br /><br />Here's why:<br /><br />* **Electrical resistance** is the opposition to the flow of electric current. Several factors affect resistance:<br /><br />* **Material:** Different materials have different inherent resistivities. Copper is a good conductor with low resistivity. Changing to copper from a higher resistivity material would *decrease* resistance (so option D is incorrect).<br /><br />* **Length:** A longer wire provides more resistance than a shorter wire. Decreasing the length would *decrease* resistance (so option A is incorrect).<br /><br />* **Cross-sectional Area (Thickness):** A thicker wire has more area for electrons to flow, resulting in *lower* resistance. Increasing the thickness decreases resistance (so option C is incorrect).<br /><br />* **Temperature:** For most materials, including copper, resistance *increases* with temperature. Higher temperatures cause the atoms in the conductor to vibrate more, which interferes with the flow of electrons.<br /><br />Therefore, increasing the temperature is the only option that would increase the electrical resistance of the circuit.<br />