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Compute the internal resistance of an el...

Compute the internal resistance of an electrical generator which has an emf of 230 V and a terminal voltage of 210 V when supplying 20 A current.

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Terminal voltage =V=210V, EMF=E=230V, current=i=20A
Internal resistance =r
`thereforeV=E-ir therefore r=(E-V)/(i)=(230-210)/(20)=1 Omega`
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