The Multimeter

In the experiments you measure current, voltage and resistance with a multimeter. They are inexpensive, widely available and can easily switch between a voltmeter, amperemeter and ohmmeter.

A distinction is made between digital and analog multimeters...

By using multimeters you are able to select between several measured values and measurement ranges. For this you use, for most multimeters, a rotary switch...

Circuit symbol ammeter.

Circuit symbol voltmeter.

Circuit symbol ohmmeter.

• An ammeter measures the electric current in Ampere [A] and displays a positive reading when the current flows from the positive (+) to the negative (−) terminal.
• A voltmeter measures the voltage in Volt [V] and displays a positive reading when the electric potential at the positive (+) terminal is higher than at the negative (−) terminal.
• An ohmmeter measures the electric resistance in Ohm [Ω] and always shows a positive reading.

Multimeters are available in two types, analog and digital multimeter. With measuring cables do you connect them to the experiments...