PHYSICS Electricity resistance 0.0 / 5 ? PhysicsElectricityGCSEAQA Created by: [email protected]Created on: 16-05-18 16:01 How is resistance measured? Ohms Ω 1 of 6 what increases the resistance of a wire? 1. The length of the wire increases 2.The thickness of a wire decreases 2 of 6 How does the resistance of a longer wire change? It is greater because electrons collide with ions more often. 3 of 6 How does the resistance of a thinner wire change? It is greater because the thinner wire has less electrons to carry the current. 4 of 6 What is the equation for Resistance? R=P.D(measured in V, volts) % Amps 5 of 6 What is the equation for P.D(potential difference)? Amps X Resistance. 6 of 6
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