Question

An alternating voltage is connected in series with a resistance R and an inductance L If the potential drop across the resistance is 200 V and across the inductance is 150 V, then the applied voltage is

• A. 350 V
• B. 250 V
• C. 500 V
• D. 300 V

Answer 1

Answer: (B)

250 V

Answer 2

The applied voltage is given by

$V = \sqrt{V_{R}^{2} + V_{L}^{2}}$

$V = \sqrt{(200)^{2} + (150)^{2}} = 250\mspace{6mu} volt$