In an ac circuit the potential differences across an inductance and resistance joined in series are, respectively, 16 V and 20 V. The total potential difference across the circuit is

Options

A. `20.0 V`
B. `25.6 V`
C. `31.9 V`
D. `53.5 V`

Answer

B

Explanation

`V=sqrt(V_(R)^(2)+V_(L)^(2))=sqrt((20)^(2)+(16)^(2))=sqrt(656)=25.6 V`