Resistance. 0.0 / 5 PhysicsElectricityGCSEAQA Created by: cieran_10Created on: 24-06-18 20:06 How are ammeters connected to a circuit? In series. 1 of 12 What are the units for current? Amperes (A.) 2 of 12 How are voltmeters connected to a circuit? In parallel. 3 of 12 What are the units of p.d.? Volts (V.) 4 of 12 What is resistance? The opposition to current flow. 5 of 12 What do current-p.d. graphs show? To show how the current of a component varies with the p.d. across it. 6 of 12 What does a resistor's p.d.-current graph look like? What is this given that? A straight line through the origin. Given that the resistor is at a constant temperature. 7 of 12 What is Ohm's law? The current-p.d. graph for a resistor. 8 of 12 What is ohmic conductor? Something that behaves in the same way as a resistor on a current-p.d. graph. 9 of 12 What does Ohm's law only apply to? A resistor at a constant temperature. 10 of 12 At a constant temperature what happens to a component's resistacne, ragrdless of the direction of its current and p.d.? It remains constant. 11 of 12 Complete the rule: the greater the resistance of the resistor, the less steep the... Current-p.d. graph. 12 of 12

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