The carbon percentage is least in which type of iron? Addition of 0.3 to 4.5% silicon to iron affects the electrical resistivity of iron how?
Understand the Problem
The questions are asking about the carbon percentage in different types of iron and the effect of adding silicon on the electrical resistivity of iron. The first question seeks to identify which type of iron has the least carbon content. The second question examines how the addition of silicon affects the resistivity.
Answer
Wrought iron has the least carbon. Silicon addition increases resistivity.
The carbon percentage is least in wrought iron. Addition of 0.3 to 4.5% silicon to iron increases the electrical resistivity of iron.
Answer for screen readers
The carbon percentage is least in wrought iron. Addition of 0.3 to 4.5% silicon to iron increases the electrical resistivity of iron.
More Information
Wrought iron contains minimally carbon, usually less than 0.08%. Adding silicon to iron is useful in electrical applications due to increased electrical resistivity.
Tips
Confusion may arise from assuming all types of iron have similar carbon percentages or that any addition of elements doesn't affect resistivity.
