Two resistance wires on joining in parallel the resultant resistance is $\frac{6}{5}\,ohms$. One of the wire breaks, the effective resistance is $2\,ohms$. The resistance of the broken wire is ............ $ohm$
A$\frac{3}{5}$
B$2 $
C$\frac{6}{5}$
D$3$
Medium
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D$3$
d Suppose resistance of wires are ${R_1}$ and ${R_2}$ then $\frac{6}{5} = \frac{{{R_1}{R_2}}}{{{R_1} + {R_2}}}$. If ${R_2}$ breaks then ${R_1} = 2\,\Omega $
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