Two wires with resistances $R$ and $2R$ are connected in parallel, the ratio of heat generated in $2R$ and $R$ is
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(a) $H = \frac{{{V^2}}}{R}.\,t$ $ \Rightarrow $ $\frac{{{H_1}}}{{{H_2}}} = \frac{{{R_2}}}{{{R_1}}} = \frac{R}{{2R}} = \frac{1}{2}$
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