There are two electric bulbs, $(i)$ marked $60\, W$, $220\, V$ and $(ii)$ marked $100 \,W , 220 \,V .$ Which one of them has higher resistance ?
There are two electric bulbs, $(i)$ marked $60\, W$, $220\, V$ and $(ii)$ marked $100 \,W , 220 \,V .$ Which one of them has higher resistance ?
We know that $R =\frac{ V ^{2}}{ P }$ or $R \propto \frac{1}{ P } .$ Thus, a $60\, W$
lamp has more resistance than a $100 \,W$ lamp.
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