Three resistors R1= 3.5 ohm, R2=2* 3.5 ohm and R3= 4.4 ohm are connected in parallel....

Question

Question

Three resistors R1= 3.5 ohm, R2=2* 3.5 ohm and R3= 4.4 ohm are connected in parallel. What is the equivalent resistance?

science physics

Answer 1

Answer #1

let their equivalent resistance be R'.

$\frac{1}{R'}=\frac{1}{R1}+\frac{1}{R2}+\frac{1}{R3}$

$\Rightarrow R' =\frac{R1\times R2\times R3}{R1+R2+R3}$

So R' = 7.235ohm

Answer 2

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