🔍 Key Concepts

• Motor controller contacts carry current and can overheat if the current path is not tight and secure • Difference between electrical causes (like poor contact) and external conditions (like room temperature) • What happens to resistance and heat when a connection is loose or pressure is low

💭 Think About

• Which option directly affects how well current passes across the contacts in the controller? • Which condition would cause localized, concentrated heating exactly at the contacts rather than the whole motor or room? • Think about Ohm’s Law and power: what happens to heat when resistance at a contact point increases?

✅ Before You Answer

• Identify which choice deals with mechanical/electrical quality of the contact surface itself • Ask: Does this option create localized high resistance at the contacts? • Eliminate options that mainly affect overall motor performance or environment, not the specific contact interface