Answer
Because of their low resistance, the connecting wires leading to the heater are somewhat warmer than the wires that heat the heater element. This results in a flow of minimal heat generation in them.
Explain why, the current that makes the heater element very hot, only slightly warms the connecting wires leading to the heater.
Explain why, the current that makes the heater element very hot, only slightly warms the connecting wires leading to the heater.