MHT CET · Physics · Alternating Current
An alternating voltage is represented by \(\mathrm{V}=80 \sin (100 \pi \mathrm{t})\) \(\cos (100 \pi \mathrm{t})\) volt. The peak voltage is
- A \(20 \mathrm{~V}\)
- B \(40 \mathrm{~V}\)
- C \(30 \mathrm{~V}\)
- D \(50 \mathrm{~V}\)
Answer & Solution
Correct Answer
(B) \(40 \mathrm{~V}\)
Step-by-step Solution
Detailed explanation
\(
\mathrm{V}=80 \sin (100 \pi \mathrm{t}) \cos (100 \pi \mathrm{t})=40 \sin 200 \pi \mathrm{t}
\)
Amplitude or the peak value of the voltage \(=40 \mathrm{~V}\)
\mathrm{V}=80 \sin (100 \pi \mathrm{t}) \cos (100 \pi \mathrm{t})=40 \sin 200 \pi \mathrm{t}
\)
Amplitude or the peak value of the voltage \(=40 \mathrm{~V}\)
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