Engineering Board Exam Reviewer · Alternating Current and Voltage · easy
A voltmeter reads 120 V on an ac line. What is the peak value of the voltage?
- 84.9 V
- 120 V
- 170 V
- 240 V
Answer
C. 170 V
Solution
The meter shows the rms value. Vp= 2,Vrms=1.414(120)=170 V.
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