Question: A 7 7 - Upper Omega resistor and a variable resistor of resistance R are placed in parallel. The expression for the resulting resistance Upper

A
77-Upper Omega
resistor and a variable resistor of resistance R are placed in parallel. The expression for the resulting resistance
Upper R Subscript Upper TRT
is given by
Upper R Subscript Upper TRTequals=StartFraction 7 Upper R Over 7 plus Upper R EndFraction7R7+R.
Determine the limiting value of
Upper R Subscript Upper TRT
as
Rright arrowinfinity.

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