An experimental bio-impedance sensor implanted in tissue operates with a potential difference of 85 mV across its terminals. The current flowing through the sensor is measured to be 1.8 mA.
Calculate the electrical power, in microwatts (μW\mu\text{W}μW), dissipated by this sensor.
31 exam-style questions on Edexcel GCSE Physics 10.3 Electrical energy and power. Each one has a worked solution and a mark scheme showing where the marks go.