Electro Magnetic Induction And Alternating Currents Question 47
Question: In an ac circuit, the potential difference across an inductance and resistance joined in series are respectively 16 V and 20 V. The total potential difference across the circuit is [AFMC 1998; BHU 1999]
Options:
A) 20.0 V
B) 25.6 V
C) 31.9 V
D) 53.5 V
Show Answer
Answer:
Correct Answer: B
Solution:
$ V=\sqrt{V_{R}^{2}+V_{L}^{2}}=\sqrt{{{(20)}^{2}}+{{(16)}^{2}}}=\sqrt{656}=25.6V $
