1.

Which, among the following, is the correct expression for φ.$

A. φ=tan<sup>-1</sup> (XL/R)
B. φ=tan<sup>-1</sup> (R/XL)
C. φ=tan<sup>-1</sup> (XL*R)
D. φ=cos<sup>-1</sup> (XL/R)
Answer» B. ‚âà√¨‚àö√∫=tan<sup>-1</sup> (R/XL)


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