Find solutions to your questions with the help of IDNLearn.com's expert community. Find the solutions you need quickly and accurately with help from our knowledgeable community.

What condition is necessary for electric charge to flow from one end of a metal bar to another?
• Temperature difference. The electric charge flows from the end with higher temperature to the end with lower temperature.
• Pressure difference. The electric charge flows from the end with lower pressure to the end with higher pressure.
• Temperature difference. The electric charge flows from the end with lower temperature to the end with higher temperature.
• Electrical potential difference. The electric charge flows from the end with higher potential to the end with lower potential.
• Electrical potential difference. The electric charge flows from the end with lower potential to the end with higher potential.
• Pressure difference. The electric charge flows from the end with higher pressure to the end with lower pressure.