Atividade 4 - Num chuveiro ligado nas posições verão e inverno, com as seguintes características: 220V – 2200W/4400W. Calcule a corrente elétrica que circula na potência menor (verão) e maior (inverno), com a mesma tensão. Dica: isole a corrente elétrica na expressão P= i x U

Explanation:

The characteristics for a shower connected in summer and winter positions is 220 V - 2200 W / 4400 W.

It means lowest power is 2200 W and highest power is 4400 W

For lowest power,

I = electric current for summer

For highest power,

I' = electric current for winters

Hence, for lowest power, current is 10 A ad for highest power, current is 20 A.

d) the number of neutrons plus the number of protons

the second one and the forth one are in the purple because they are opinions and the rest are in the yellow

explanation: