Multiple choice

Which among the following metals is used for joining wires in electronic circuit boards?

  1. Silver

  2. Lead

  3. Mercury

  4. Gold
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Solder, which is primarily composed of lead (or lead-tin alloy), is the standard metal used for joining wires and components in electronic circuit boards due to its low melting point and good conductivity. While silver and gold are excellent conductors, they are too expensive for routine soldering use, and mercury is a liquid at room temperature making it impractical for permanent connections.

Keep practicing — related questions