However, unlike an ammeter, you must connect the voltmeter in parallel to measure the potential difference across a component in a circuit.

A parallel circuit is way of connecting components on separate branches, so the current can take different routes around the circuit. The current is different in different parts of a parallel circuit.

With S 2 in the lower position, both LED drivers connect in parallel, and the tested zener voltage is approximately 20 to 25V at several milliamps of current. Both parallel and in-series connections ...

The circuit in Figure 1 measures both the true-rms value and the rectified average value of an ac signal. This design uses two low-cost ICs in SOIC packages and consumes only 180 µA of quiescent ...

This article discusses Loudspeaker Impedance and the load an amplifier sees if you wire speakers in series or parallel. We discuss the math and expected SPL differences as well as pros/cons of each.