A diode is connected in series with a lamp in a battery-powered warning beacon. On the circuit diagram, the arrowhead of the diode symbol points from the positive terminal of the battery towards the lamp.
What is the correct description of the resistance of the diode?
It has low resistance from the battery towards the lamp and very high resistance in the opposite direction.
It has very high resistance from the battery towards the lamp and low resistance in the opposite direction.
It has the same very high resistance in both directions through the circuit.
It has the same low resistance in both directions through the circuit.
82 exam-style questions on AQA GCSE Physics 2.1 Current, potential difference and resistance, covering 2.1.1 Standard circuit diagram symbols, 2.1.2 Electrical charge and current, 2.1.3 Current, resistance and potential difference, and 2.1.4 Resistors. Each one has a worked solution and a mark scheme showing where the marks go.