Eletricidade

1. Calcular todas as correntes e tensões no circuito abaixo e o consumo total em 20 horas.

[pic 1]

__________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

1. Entre os terminais A e B do circuito abaixo é aplicada uma ddp de 60v.

1. Determine a intensidade de corrente que passa no resistor de 10 Ω.
2. Qual é a ddp entre os extremos do resistor de 6 Ω?

[pic 2]

________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

1. Uma corrente de 0,1 A passa pelo resistor de 25 Ω, conforme indicado na figura abaixo. Qual é a corrente que passa pelo resistor de 80 Ω?

[pic 3]

________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

1. Determine a resistência equivalente do seguinte circuito:

[pic 4]

________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

1. Vamos supor que 1kWh custa R$ 0,40. Calcule o custo de energia elétrica consumida por um eletrodoméstico de potência 600W funcionando 8h por dia, num mês de 30 dias.

________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

...