Affect vs. Effect
What is the difference between affect and effect?
Most of the time affect is a verb and effect is a noun. Affect means to influence or change and effect means the result of change.
Quick Tip: If you need to put an article (a/an/the) before it, effect is the correct choice (usually).*
The bad weather affected the power lines, and our video conference was delayed.
Jessica worried that her frequent tardiness might have an effect on her performance review.
*occasionally effect can be used as a verb (meaning to produce a result) and affect can be used as a noun (used in psychology/psychiatry to mean an emotional state).