Which of the following statements are FALSE? Impedance (Z) is a complex quantity defined such that Z = R + jX where R is reactance and X is resistance. Complex quantities can be expressed in Cartesian form, polar form or exponential form. When adding Complex quantities they must first be converted to polar form. When multiplying Complex quantities they must first be converted to either polar or exponential form. The magnitude of Z i.e. |Z| = R + X. The magnitude of Z i.e. |Z| = R 2 + X 2 . The angle θ in the diagram below can be defined as θ = cos(X/R). The angle θ in the diagram below can be defined as θ = tan -1 (X/R).

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Which of the following statements are FALSE?

Impedance (Z) is a complex quantity defined such that Z = R + jX where R is reactance and X is resistance.
Complex quantities can be expressed in Cartesian form, polar form or exponential form.
When adding Complex quantities they must first be converted to polar form.
When multiplying Complex quantities they must first be converted to either polar or exponential form.
The magnitude of Z i.e. |Z| = R + X.
The magnitude of Z i.e. |Z| = R² + X².
The angle θ in the diagram below can be defined as θ = cos(X/R).
The angle θ in the diagram below can be defined as θ = tan^-1(X/R).

1,2,4,6,7

1,3,5,6,7

2,4,8

3,5,8

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