A digital multimeter can measure which three basic elements?

A digital multimeter can measure which three basic elements?

• A. Current, voltage, and resistance
• B. Capacitance, inductance, and impedance
• C. Power, energy, and frequency
• D. Temperature, humidity, and pressure

Answer: (A)

Measuring voltage, current, and resistance are the fundamental capabilities of a digital multimeter. Voltage is the electrical potential difference you observe across a component, measured by placing the meter in parallel with it. Current is the flow of electrons, measured by placing the meter in series so all the circuit current goes through the meter. Resistance is how much a component opposes that current, measured by applying a small internal current (or voltage) and using Ohm’s law to compute R from the observed values. Capacitance, inductance, and impedance involve reactive properties and often require specialized meters or measurements at specific frequencies, which is beyond the basic three-electQuantity functions of a standard DMM. Environmental readings like temperature, humidity, and pressure come from different sensors and instruments, not from a typical electrical multimeter.

Measuring voltage, current, and resistance are the fundamental capabilities of a digital multimeter. Voltage is the electrical potential difference you observe across a component, measured by placing the meter in parallel with it. Current is the flow of electrons, measured by placing the meter in series so all the circuit current goes through the meter. Resistance is how much a component opposes that current, measured by applying a small internal current (or voltage) and using Ohm’s law to compute R from the observed values.

Capacitance, inductance, and impedance involve reactive properties and often require specialized meters or measurements at specific frequencies, which is beyond the basic three-electQuantity functions of a standard DMM. Environmental readings like temperature, humidity, and pressure come from different sensors and instruments, not from a typical electrical multimeter.