Question

Two resistance r1 and r2 (r1<r2) are joined in parallel the equivalent resistance R is such that​

Answer 1

Answer:

R2>R1 will be the ans but you have already mentioned

Answer 2

Answer:

Two resistance $r_1 and\ r_2$ ($r_1 < r_2$) are joined in parallel the equivalent resistance R is such that $R < r_1$.

Explanation:

According to the question, there are two resistance $r_1 and\ r_2$ ($r_1 < r_2$)

are joined in parallel.

And R be the equivalent resistance.

After adding the two values together, take the reciprocal once more.

Formula to find the equivalent resistance R, when the resistance are joined in parallel,

$\frac{1}{R} = \frac{1}{r_1} +\frac{1}{r_2}$

⇒ $\frac{1}{R} = \frac{r_2 + r_1}{r_1r_2}$

⇒R = $\frac{r_1r_2}{r_1+r_2}$.

Hence, the value of R should be less than  the smallest value of ,$R < r_1$.

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