The "magnet effect" is used by those who argue that the existence of a circuit breaker can make it more likely that the market will hit the trigger point, just as a magnet attracts metal objects.

BNN Bloomberg Andrew Bell provides analysis on what’s happening on the markets and when a circuit breaker is triggered.

But if you are confused about what is a circuit breaker and how far stocks need to fall to trigger one, read on to find out. More from Explainers Saudi Arabia bans visas for India, 13 other countries.

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