Understanding Multimeters

What is a multimeter used for?

• To analyze chemical compositions

• A multimeter is used to measure voltage, current, and resistance in electrical circuits.

• To measure temperature in liquids

• To test the strength of materials

Name the two main types of multimeters.

• Analog multimeters and digital multimeters

• Resistance meters and capacitance meters

• Frequency meters and power meters

• Voltage meters and current meters

What does a digital multimeter display?

• A digital multimeter displays numerical values of voltage, current, and resistance.

• A digital multimeter displays only graphical representations.

• A digital multimeter displays the weather forecast.

• A digital multimeter displays audio signals.

What is the function of the red lead in a multimeter?

• The red lead measures current only.

• The red lead is for connecting to AC power.

• The red lead is used for grounding measurements.

• The red lead serves as the positive connection for measurements.

What does the term 'ohm' measure?

• Electrical voltage

• Electrical current

• Electrical power

• Electrical resistance

How do you measure voltage with a multimeter?

• Connect probes to the circuit, set multimeter to voltage mode, and read the display.

• Connect probes to the battery only

• Read the voltage without connecting probes

• Set multimeter to resistance mode

What is the purpose of the dial on a multimeter?

• To power the multimeter.

• To adjust the brightness of the screen.

• To select measurement type and range.

• To display the battery level.

What safety precautions should be taken when using a multimeter?

• Set the multimeter to the highest setting for all measurements

• Ignore the manufacturer's instructions for safety

• Use proper settings, avoid live circuits, inspect equipment, and follow voltage ratings.

• Use the multimeter in water for better accuracy

What is the difference between AC and DC voltage?

• AC voltage is always higher than DC voltage.

• AC voltage changes direction periodically; DC voltage flows in one direction.

• AC voltage is used in batteries while DC is used in power lines.

• DC voltage can change direction periodically.

How do you measure current with a multimeter?

• Place the multimeter on the ground to measure current.

• Connect the multimeter in parallel with the circuit to measure current.

• Use the multimeter to measure voltage instead of current.

• Connect the multimeter in series with the circuit to measure current.