a) A resistance R2 is connected in parallel with a resistance R1. Derive an expression for the resistance R3 that must be connected in series with the combination of R1 and R2 so that the equivalent resistance is equal to the resistance R1.
b) A resistance R2 is connected in series with a resistance R1. Derive an expression for the resistance R3 that must be connected in parallel with the combination of R1 and R2 so that the equivalent resistance is equal to R1.
Thanks. Appreciate the help :)
2007-11-14 10:26:47 · 2 answers · asked by Hannah 4 in Science & Mathematics ➔ Physics
Cute questions.
The equivalent resistance of two resistors in parallel is
R1 R2 / ( R1 + R2 )
Your expressions are
R1 R2 / ( R1 + R2 ) + R3 = R1
Solve for R3
( R1 + R2 ) R3 / (R1 + R2 + R3 ) = R1
Solve for R3
2007-11-14 10:32:46 · answer #1 · answered by jgoulden 7 · 0⤊ 0⤋
Shut the **** up kthxbye
2007-11-14 10:30:22 · answer #2 · answered by Anonymous · 0⤊ 1⤋