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 $



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