Two
Five
Four
Three
Single Phase Dual Throw
Single Pole Single Throw
Single Pole Double Throw
Shared Pole Double Throw
40:60
20:40
60:40
63:37
After the solder melts
When the solder is melting
During the solder is melting
When the solder is heated
It is non-conductive
It is good conductor
It is a chemical paste
Inorganic acid in nature