Get ready for the FCC General Radiotelephone Operator License (GROL) exam. Study with flashcards and multiple choice questions, each with hints and detailed explanations. Prepare effectively for your licensing test!

Multiple Choice

Which of the 4 groups of metals listed below are the best low-resistance conductors?

Low resistance means high electrical conductivity. For a given size, the material with the lowest resistivity will have the smallest resistance. Silver, copper, and gold are among the pure metals with the highest conductivities; silver is the best conductor, copper is almost as good and widely used because it combines high conductivity with strength and affordability, and gold also conducts well and resists corrosion. As a group, they provide the lowest resistance paths. The other groups mix metals and alloys that have higher resistivities, so they don’t conduct as efficiently. That makes the trio of gold, silver, and copper the best choice for low-resistance conduction.

Low resistance means high electrical conductivity. For a given size, the material with the lowest resistivity will have the smallest resistance. Silver, copper, and gold are among the pure metals with the highest conductivities; silver is the best conductor, copper is almost as good and widely used because it combines high conductivity with strength and affordability, and gold also conducts well and resists corrosion. As a group, they provide the lowest resistance paths.

The other groups mix metals and alloys that have higher resistivities, so they don’t conduct as efficiently. That makes the trio of gold, silver, and copper the best choice for low-resistance conduction.