Created by StemPy LabThe graph of current against voltage for a filament lamp bends towards the voltage axis at high voltage. What does this show?
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← The copper winding of a motor has a resistance of 12.4 Ω at 20 °C. After the motor runs, the winding is at 85 °C. The temperature coefficient of copper is 3.9 × 10⁻³ per °C. What is the resistance of the winding now?A long resistance wire of 80 Ω is sawn into 4 identical strands. All four strands are clamped between the same two terminals. What is the resistance between the terminals? →
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