An automated external defibrillator (AED) is used to deliver a rapid pulse of electrical current through a patient’s chest to restore a normal heart rhythm.
During a shock, a potential difference of 750 V is applied across the patient's chest.
A charge of 0.060 C passes through this electrical pathway in a brief pulse lasting 2.4 ms.
Calculate the average electrical resistance of the chest pathway during this discharge.
39 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.