What does the rate of the E2 reactions depend on?

Related questions

• What are the differences between E1 and E2 reactions?
• What do E1 and E2 reactions have in common?
• Do both elimination reactions, E1 and E2, follow Zaitsev’s rule?
• Which elimination reactions, E1 or E2, depend on the concentration of the substrate?
• Is there a formation of carbocation in both elimination reactions, E1 and E2?
• Do E1 reactions require a strong base, like E2 reactions?
• Why does the rate of the E1 reaction depend only on the substrate?
• Is there a requirement for the stereochemistry of the starting material in E1 reactions? Why?
• Why does the stereochemistry of the hydrogen to be removed must be anti to that of the leaving...
• Why can cyclohexane rings cause some complications with elimination reactions?