A greenhouse ventilation controller is powered by a 12.0 V supply. Before the circuit divides into branches, charge passes through a 5.0 Ω resistor carrying a current of 0.80 A. Beyond the resistor, a warning lamp and a fan are connected on separate parallel branches.
What is the potential difference across the warning lamp?
12.0 V12.0\ \text{V}12.0 V
8.0 V8.0\ \text{V}8.0 V
7.0 V7.0\ \text{V}7.0 V
16.0 V16.0\ \text{V}16.0 V
94 exam-style questions on AQA GCSE Physics 2.2 Series and parallel circuits, covering 2.2 Series and parallel circuits. Each one has a worked solution and a mark scheme showing where the marks go.