Testing electronic components

Scenario: Jamie needs a tool to measure the voltage of a battery and the resistance in a circuit. Which tool should Jamie use?

• Ammeter

• Multimeter

• Cable tester

• Power supply

What are the two main types of multitesters?

• Manual and automatic

• Analog and digital

• Static and dynamic

• AC and DC

True or False: The pointer on a multimeter is a needle-shaped rod that shows the measured values on the scale.

• True

• False

What is the purpose of the range selector knob on a multimeter?

• To turn the multimeter on and off

• To select different functions and measurement ranges

• To adjust the brightness of the display

• To reset the multimeter

Scenario: Alex notices that the pointer on an analog multimeter does not align with the zero mark on the scale. Which part of the multimeter should Alex adjust to fix this?

• Range selector knob

• Probe

• Adjustment screw

• Display

What type of scale is typically used for voltage and current readings on a multimeter?

• Exponential

• Logarithmic

• Linear

• Quadratic

What is the purpose of the zero-ohm adjusting knob on a multimeter?

• To select the measurement range

• To adjust the pointer to zero before measuring resistance

• To change the function of the multimeter

• To adjust the brightness of the display

Jamie is testing a circuit with a multimeter and needs to connect the probes correctly to measure voltage. Which probe should Jamie connect to the positive side of the circuit?

• Black

• Blue

• Yellow

• Red

What voltage does the yellow wire in a PC power supply represent?

• +5V

• Ground

• +3.3V

• +12V

True or False: In PC power supplies, the red wire typically carries +3.3V.

• True

• False