The Apple Watch Series 5 and later and some other smartwatches are equipped with magnetometers to improve the accuracy of navigation and gesture tracking. Because this magnetometer measures magnetic ...

To use a voltmeter to measure the voltage across a metal wire and an ammeter to measure the current passing through the wire, and: demonstrate understanding that the temperature of the wire is kept ...

Current is a measure of how much electric charge flows through a circuit. The more charge that flows, the bigger the current. Current is measured in amperes. The symbol for ampere is A. For example, ...