Learning to Solder with Dr. Zoon

What is the primary purpose of soldering in electronics?

• To insulate wires

• To paint the circuit board

• To join two metals making an electrical connection

• To cool down electronic components

Which tool is used to heat the metals during soldering?

• Pliers

• Soldering pencil

• Hammer

• Screwdriver

What is the composition of most electronic solder?

• 60% tin and 40% lead

• 50% tin and 50% lead

• 80% tin and 20% lead

• 70% tin and 30% lead

What is the function of the traces on a circuit board?

• To add color to the board

• To provide mechanical support

• To serve as electrical connections between soldering pads

• To protect the board from moisture

What is the purpose of tinning the soldering pencil tip?

• To make the tip shiny and ready to solder

• To change the tip's color

• To clean the tip

• To cool down the tip

What should you do if the solder does not flow during soldering?

• Add more solder

• Remove the soldering pencil immediately

• Hold the tip of the pencil to the joint until the solder flows

• Increase the pressure on the soldering pencil

What is a cold solder joint?

• A joint with a large puddle of solder and poor electrical connection

• A joint that is perfectly made

• A joint that is too hot

• A joint that is not visible

What safety equipment is essential while soldering?

• Safety glasses

• Ear plugs

• Knee pads

• Helmet

What is the role of the resin in solder?

• To increase the melting point of the solder

• To help the solder flow freely

• To make the solder harder

• To change the color of the solder

What is the function of an LED in a circuit?

• To decrease the current

• To increase the voltage

• To store electrical energy

• To emit light when electricity passes through