In the circuit shown in the figure R_(X) is a variable resistance. find the equivalent resistance (R_(AB)) between A and B in terms of R and R_(X). What are the possible range of values of R_(AB) ?

In the circuit shown in the figure R_(X) is a variable resistance. fin

1.	In the circuit shown in the figure R_(X) is a variable resistance. find the equivalent resistance (R_(AB)) between A and B in terms of R and R_(X). What are the possible range of values of R_(AB) ?
Answer» Answer :(a) `R_(AB)=((4R+3R_(x))/(3R+2R_(x)))R` `(4)/(3) R lt R_(AB) lt (3)/(2)R`

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In the circuit shown in the figure R_(X) is a variable resistance. find the equivalent resistance (R_(AB)) between A and B in terms of R and R_(X). What are the possible range of values of R_(AB) ?

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