1.

What is the cause of resistance ?

Answer» It doesn\'t have any cause . It helps to contol the electical curren because of thier relation , they are inversely proportional to them if resistance is increased current decreases that is why we use regulators in fans which helps to regulate current means to control current . And actually we do that we increase the regulator that means we decreasing the resistivity and currnent increases and as a result the fan moves faster.
The flow of an electric current


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