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Related Concept Videos

RC Circuits: Discharging A Capacitor01:27

RC Circuits: Discharging A Capacitor

4.6K
One of the applications of an RC circuit is the relaxation oscillator. The relaxation oscillator comprises a voltage source, a capacitor, a resistor, and a neon lamp. The lamp acts like an open circuit (infinite resistance) until the potential difference across the neon lamp reaches a specific voltage. At that voltage, the lamp acts like a short circuit (zero resistance), and the capacitor discharges through the neon lamp and produces light. Once the capacitor is fully discharged through the...
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RC Circuits: Charging A Capacitor01:30

RC Circuits: Charging A Capacitor

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A circuit containing resistance and capacitance is called an RC circuit. A capacitor is an electrical component that stores electric charge by storing energy in an electric field. Consider a simple RC circuit having a DC (direct current) voltage source ε, a resistor R, a capacitor C, and a two-way position switch. In the circuit, the capacitor can be charged or discharged depending on the position of the switch.
When the switch is moved to connect the battery, the circuit reduces to a simple...
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RC Circuit without Source01:16

RC Circuit without Source

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When a DC source is abruptly disconnected from an RC (Resistor-Capacitor) circuit, the circuit becomes source-free. Assuming that the capacitor was fully charged before the source was removed, its initial voltage, denoted as V0, can be considered as the initial energy that stimulates the circuit.
Applying Kirchhoff's current law at the top node of the circuit and substituting the current values across the components, a first-order differential equation is obtained. By rearranging the terms...
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Resistance01:19

Resistance

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When a current moves through any conductor, the conductor causes some level of difficulty for the current to flow. The measure of that difficulty is known as the resistance of the material and is represented by R. Every material has its own resistance. In the case of conductors, heat is emitted whenever a current passes through them. Resistance depends on the resistivity of the material. Resistivity is a characteristic of the material used to fabricate electrical components, whereas the...
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RC Circuit with Source01:15

RC Circuit with Source

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When a DC source is abruptly applied to an RC (Resistor-Capacitor) circuit, the voltage can be represented as a unit step function. The voltage across the capacitor, known as the step response, characterizes how the circuit reacts to this sudden change in input.
Due to the inherent properties of a capacitor, its voltage cannot change instantaneously. This means that immediately after the switch is closed, the capacitor's voltage remains the same as it was just before the switch was closed.
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Applications of RC Circuits01:22

Applications of RC Circuits

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A relaxation oscillator is one of the applications of RC circuits. A neon lamp relaxation oscillator comprises a capacitor, a resistor, a voltage source, and a lamp. The lamp acts like an open circuit, with infinite resistance until the potential difference across the lamp reaches a specific voltage. At that voltage, the lamp acts like a short circuit with zero resistance, and the capacitor discharges through the lamp, thus producing light. Once the capacitor is fully discharged through the...
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Updated: Feb 26, 2026

A Novel Technique of Rescuing Capsulorhexis Radial Tear-out using a Cystotome
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Protests won't stop until the cap is scrapped, warns RCN.

Matthew Mckew

    Nursing Standard (Royal College of Nursing (Great Britain) : 1987)
    |July 13, 2017
    PubMed
    Summary

    The Royal College of Nursing (RCN) will continue its summer protests as the government upholds a 1% pay cap for nurses. This decision fuels ongoing disputes over fair compensation for nursing staff.

    Area of Science:

    • Healthcare policy
    • Labor relations in nursing

    Background:

    • The UK government has imposed a 1% pay cap on public sector pay, affecting nurses.
    • The Royal College of Nursing (RCN) has expressed strong opposition to this policy.

    Purpose of the Study:

    • To report on the RCN's commitment to continued protest actions.
    • To highlight the government's stance on maintaining the nurse pay cap.

    Main Methods:

    • This is a news report, not a scientific study. Methods are not applicable.

    Main Results:

    • The RCN has declared its summer protests are ongoing.
    • The government has confirmed its intention to maintain the 1% pay cap for nurses.

    Conclusions:

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    • The conflict between the RCN and the government over nurse pay is set to continue.
    • Further industrial action by nurses is anticipated.