PERGUNTA 1

Uma placa metálica fina está eletricamente carregada de forma que a função densidade de carga elétrica é dada por sigma left parenthesis x comma y right parenthesis equals 2 x plus 4 y. A placa pode ser considerada um quadrado cujos vértices no plano são os pontos left parenthesis 0 comma 0 right parenthesis comma left parenthesis 2 comma 0 right parenthesis comma left parenthesis 2 comma 1 right parenthesis e left parenthesis 0 comma 1 right parenthesis.


Assinale a alternativa que apresenta a expressão usada para calcular a carga elétrica total da placa.

a.
Q equals integral subscript 1 superscript 2 integral subscript 0 superscript 1 left parenthesis 2 x plus 4 y right parenthesis space d y space d x.

b.
Q equals integral subscript 0 superscript 2 integral subscript 0 superscript 1 left parenthesis 2 x plus 4 y right parenthesis space d x space d y.

c.
Q equals integral subscript 0 superscript 2 integral subscript 0 superscript 1 left parenthesis 2 x plus 4 y right parenthesis space d y space d x.

d.
Q equals integral subscript 0 superscript 1 integral subscript 0 superscript 2 space left parenthesis 2 x plus 4 y right parenthesis d y space d x.

e.
Q equals integral subscript 0 superscript 1 integral subscript 0 superscript 1 left parenthesis 2 x plus 4 y right parenthesis space d y space d x.
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