When measuring the current, it is necessary to connect an ammeter (or an multimeter in current mode) in series to the branch to be measured. In electronic circuits, indirect measurement is often used. By connecting a relatively small resistance in series to a branch, that is, to measure the voltage across a known resistance with a voltmeter, and then determine the current value.
选项:
A:正确;
B:错误
发布时间:2024-03-25 20:22:01