Cattle prod

Why does an electric cattle prod cause pain ... 

An electric cattle prod looks a little like a walking stick with an attached battery. A potential from the tip of the stick is applied to a cow s flank, and the induced current hurts the animal. The cow moves where prompted to avoid a reapplication of the pain, thereby simplifying the job of cowherding. 

In summary, the cattle prod causes pain because of the current formed in response to applying a voltage. 

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