The signal v(t) = -11.1 + 22.9 cos(2?100t) V is applied to an AC voltmeter. What is the voltage measured? Round off your answer to two decimal places.
Added by Steven P.
Close
Step 1
1 + 22.9 cos(200t) V. Show more…
Show all steps
Your feedback will help us improve your experience
Pritesh Ranjan and 86 other Physics 101 Mechanics educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
In an $\mathrm{AC}$ circuit with voltage $V(t)=v \sin (2 \pi \mathrm{ft}),$ a voltmeter actually shows the average (root-mean-square) voltage of $v / \sqrt{2}$. If the frequency is $f=60$ (Hz) and the meter registers 115 volts, find the maximum voltage reached.
Applications of Differentiation
Optimization
In an AC circuit, the voltage is given by $v(t)=v_{p} \sin 2 \pi f t$ where $v_{p}$ is the peak voltage and $f$ is the frequency in Hz. A voltmeter actually measures an average (called the root-meansquare) voltage, equal to $v_{p} / \sqrt{2} .$ If the voltage has amplitude 170 and period $\pi / 30,$ find the frequency and meter voltage.
Preliminaries
Trigonometric and Inverse Trigonometric Functions
An ac power supply produces a maximum voltage $\Delta V_{\max }=100 \mathrm{~V}$. This power supply is connected to a $24.0-\Omega$ resistor, and the current and resistor voltage are measured with an ideal ac ammeter and voltmeter, as shown in Figure P33.3. What does each meter read?
Recommended Textbooks
University Physics with Modern Physics
Physics: Principles with Applications
Fundamentals of Physics
Transcript
Watch the video solution with this free unlock.
EMAIL
PASSWORD