<h2>Resistors in an AC Circuit</h2>
<p>Just as a reminder, consider <a href="#navlink_id1169737758127">this figure</a>, which shows an AC voltage applied to a resistor and a graph of voltage and current versus time. The voltage and current are exactly <em>in </em><em>phase</em> in a resistor. There is no frequency dependence to the behavior of plain resistance in a circuit:</p>
<div class="fig_container" id="navlink_id1169737758127"><img alt="Part a of the diagram shows a resistor R connected across an A C voltage source V. The voltage drop across the resistor R is given by V R.Part b of the diagram shows a graph showing the variation of voltage V R and current I R with time t. the V R and current I R are plotted along Y axis and time t is along the X axis. Both I and V are progressive cosine waves. The amplitude of I wave is more than V wave." src="https://data.ulearngo.com/assets/ee468154-8d70-4738-886d-0ad2d0340282"/>
<p class="fig_caption">(a) An AC voltage source in series with a resistor. (b) Graph of current and voltage across the resistor as functions of time, showing them to be exactly in phase.</p>
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<h3>AC Voltage in a Resistor</h3>
<p>When a sinusoidal voltage is applied to a resistor, the voltage is exactly in phase with the current—they have a \(\text{0º}\) phase angle.</p>
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Resistors in an AC Circuit

Physics is a science discipline concerned with the nature and properties of matter and energy. Physics topics include mechanics, heat, light and radiation, sound, electricity, magnetism, the structure of atoms, and so on.

Physics

Explore the principles and applications of electromagnetic induction, Faraday&#8217;s and Lenz&#8217;s laws, generators, transformers, and safety systems in electrical circuits, as well as inductors, capacitors, and resistors in AC circuits, including RL circuits, reactance, impedance, and resonance.


Resistors in an AC Circuit

Resistors in an AC Circuit

AC Voltage in a Resistor

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