AP EAMCET · PHYSICS · Alternating Current
A current of \(4 \mathrm{~A}\) flows in a coil when connected to a \(12 \mathrm{~V}\) d.c. source. If the same coil is connected to a \(12 \mathrm{~V},\left(\frac{25}{\pi}\right) \mathrm{Hz}\) a.c source, a current of \(2.4 \mathrm{~A}\) flows in the circuit. The inductance of the coil is
- A \(\begin{aligned} & 100 \mathrm{mH}\end{aligned}\)
- B \(\begin{aligned} & 80 \mathrm{mH} \end{aligned}\)
- C \(\begin{aligned} & 60 \mathrm{mH} \end{aligned}\)
- D \(\begin{aligned} & 50 \mathrm{mH}\end{aligned}\)
Answer & Solution
Correct Answer
(B) \(\begin{aligned} & 80 \mathrm{mH} \end{aligned}\)
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