Question Number 36851 by Tinkutara last updated on 06/Jun/18
Answered by tanmay.chaudhury50@gmail.com last updated on 06/Jun/18
$$\bigtriangleup{V}={V}_{\mathrm{2}} −{V}_{\mathrm{1}} =\mathrm{80}−\mathrm{120}=−\mathrm{40} \\ $$$$\bigtriangleup{r}={r}_{\mathrm{2}} −{r}_{\mathrm{1}} =\mathrm{1}−\left(−\mathrm{1}\right)=\mathrm{2} \\ $$$${E}=−\frac{\bigtriangleup{V}}{\bigtriangleup{r}}=\frac{−\left(−\mathrm{40}\right)}{\mathrm{2}}=\mathrm{20} \\ $$$${ans}\:{is}\:\left({a}\right) \\ $$
Commented by Tinkutara last updated on 06/Jun/18
Multiple correct type question. Answer given is not a.
Commented by tanmay.chaudhury50@gmail.com last updated on 06/Jun/18
$${pls}\:{post}\:{the}\:{explanation}\:{of}\:{the}\:{answer}\:{if}\:{any} \\ $$
Commented by Tinkutara last updated on 07/Jun/18
That's not available.
Commented by Tinkutara last updated on 24/Jun/18
Anybody?