In a circuit diagram, one component is drawn as a solid triangle whose tip touches a short straight line drawn across the wire. What does this symbol tell you about the current in that part of the circuit?
The current is in one direction only, opposite to the way the triangle points
The current increases in the way the triangle points and falls the other way
The current is the same in both directions but the resistance is different
The current is in one direction only, in the same way the triangle points
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.