- 1/3A
- 4/3A
- 5/3A
- 7/3A
Solution; The correct answer is B. 4/3 A
Suppose that there is no loss in power transmission:
$ {{E}_{1}}{{I}_{1}}={{E}_{2}}{{I}_{2}} $
$ {{I}_{2}}=\frac{{{E}_{1}}}{{{E}_{2}}}{{I}_{1}} $
$ {{E}_{1}}=220V~and,\,\,{{E}_{2}}=3.3kV=3300V $
$ P={{E}_{1}}{{I}_{1}} $
$ {{I}_{1}}=\frac{P}{{{E}_{1}}}=\frac{4.4\times {{10}^{3}}}{220}=20A $
$ {{I}_{2}}=\frac{220}{3300}\times 20 $
$ {{I}_{2}}=1.3A $