If two wires having resistance R and 2R. Both joined in series and in parallel then ratio of heat generated in this situation, applying the

Q: If two wires having resistance $R$ and $2R$. Both joined in series and in parallel then ratio of heat generated in this situation, applying the same voltage,

c (c) Heat $H = \frac{{{V^2}t}}{R}$ $ \Rightarrow $ $H \propto \frac{1}{R}$ (If $V$, $t$ constant) $ \Rightarrow $ $\frac{{{H_S}}}{{{H_P}}} = \frac{{{R_P}}}{{{R_S}}} = \frac{{\left( {\frac{{R \times 2R}}{{3R}}} \right)}}{{(R + 2R)}} = \frac{2}{9}$

SECTION - A [PHYSICS MCQ]

GSEB - English Medium

If two wires having resistance $R$ and $2R$. Both joined in series and in parallel then ratio of heat generated in this situation, applying the same voltage,

A$2:1$
B$1:2$
C$2:9$
D$9:2$

Medium

STD 11 Science
JEE
STD 12 - 3. current electricity
Physics

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