007

De vervangingswaarde van de weerstanden is:

a   R = R1 + R2+R3 / R2xR3
b   R = R1 + R2xR3 / R2+R3
c   1/R = 1/R1 + 1/R2 + 1/R4
d   1/R = R1+R2+R3  /  R2xR3

004

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