1. Which is the best multimeter?

There are certain multimeters that can measure humidity, duty cycle, pressure, frequency, temperature, etc. with advanced characteristics. A Digital Multimeter with a Probe is the best multimeter.  

2. What is a multimeter used for? 

A digital multimeter is a test instrument used to measure two or more electrical values, primarily resistance, current, and voltage (in volts and amps) (ohms). For technicians working in the electrical and electronic industries, it is a typical diagnostic tool.

3. What is a Raspberry Pi Multimeter? 

This tiny device connects to your Raspberry Pi via USB and offers ADC (analog to digital conversion) inputs.

4. What are multimeters used for?

A multimeter can be a handheld device for basic fault detection and field service work or a bench instrument with extremely high accuracy. These instruments can be used to troubleshoot electrical issues in a wide range of industrial and household devices, such as electronic equipment, motor controls, domestic appliances, power supplies, and wiring systems.

5. Which is a better analog or digital multimeter?

Both digital and analog multimeters are excellent tools for measuring electrical current, voltage, and resistance.

The digital multimeter wins the race in terms of features, readings, and ease of use.

However, analog multimeters have their advantages and should be considered if you need a low-cost multimeter solution.

6. What is a voltmeter used for?

A voltmeter, also known as a voltage metre, is a tool that measures the potential difference, or voltage, between two points in an electrical or electronic circuit, direct current or alternating current voltages on a scale commonly expressed in volts, millivolts, or kilovolts.
Some voltmeters are designed for direct current (DC) circuits, while others are for alternating current (AC) circuits. Radiofrequency (RF) voltage can be measured using specialised voltmeters.
Many voltmeters are digital and display readings numerically.

7. What is the principle of a voltmeter?

A voltmeter's basic principle is that it must be connected in parallel to the circuit in which the voltage is to be measured. Because a voltmeter is constructed in such a way that it has a very high resistance value, a parallel connection is used.