This is the expression when $R$ is given in iuris of $J / mol / K$. when we convert into calories, the expression changes to -
$C_{p}-C_{v}=\frac{R}{T}$
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.


$1.$ If the direct transmission method with a cable of resistance $0.4 \Omega \ km ^{-1}$ is used, the power dissipation (in %) during transmission is :
$(A)$ $20$ $(B)$ $30$ $(C)$ $40$ $(D)$ $50$
$2.$ In the method using the transformers, assume that the ratio of the number of tums in the primary to that in the secondary in the step-up transformer is $1: 10$. If the power to the consumers has to be supplied at $200 \ V$, the ratio of the number of tums in the primary to that in the secondary in the step-down transformer is :
$(A)$ $200: 1$ $(B)$ $150: 1$ $(C)$ $100: 1$ $(D)$ $50: 1$
Give the answer question $1$ and $2.$
