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The power dissipated in a series RCL circuit is 65.0 W, and the current is 0.530 A. The circuit is at resonance. Determine the voltage of the generator.

Short Answer

Expert verified
The voltage is 122.64 V.

Step by step solution

01

Understand the Problem

The problem involves determining the voltage of a generator in a series RCL circuit that is at resonance when given the power dissipated and the current. The power is 65.0 W and the current is 0.530 A.
02

Recall the Power Formula

The power dissipated in a circuit is given by the formula \[ P = VI \]where \( P \) is the power, \( V \) is the voltage, and \( I \) is the current.
03

Rearrange the Formula to Solve for Voltage

We need to determine the voltage \( V \). Rearrange the power formula to solve for \( V \):\[ V = \frac{P}{I} \]
04

Substitute the Given Values

Substitute the given values into the rearranged formula:\[ V = \frac{65.0}{0.530} \]
05

Calculate the Voltage

Perform the division to find the voltage:\[ V = 122.64 \]
06

Finalize the Answer

The voltage across the generator, when the circuit is at resonance, is \( 122.64 \text{ V} \).

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Power Formula in RCL Circuits
Understanding the power formula is crucial in analyzing circuits. In electric circuits, especially in an RCL (resistor-capacitor-inductor) circuit, power dissipation is a key aspect. The power formula is given by \( P = VI \), where \( P \) represents the power in watts, \( V \) is the voltage in volts, and \( I \) is the current in amperes. This formula helps in determining the unknown parameter when two of the three parameters are known.
  • Power, \( P \), is the rate at which energy is used or transferred.
  • In the context of RCL circuits, it is often about how much energy is being consumed or lost as heat.
  • The formula illustrates the direct relationship between voltage, current, and power.
By rearranging the formula, one can solve for the missing value. In this case, to find the voltage, the formula becomes \( V = \frac{P}{I} \). This allows for easy calculation provided the other values (power and current) are known.
Resonance in RCL Circuits
In a series RCL circuit, resonance occurs when the inductive reactance equals the capacitive reactance. At this point, the circuit's impedance is minimized, and the voltage across the generator and the current are in phase. This simplification means that the voltage and current reach their peak values simultaneously, which makes calculations straightforward.
  • At resonance, the frequency at which the circuit operates is called the resonant frequency, \( f_0 \).
  • Resonance allows maximum energy transfer from the generator to the circuit.
  • The circuit behaves purely resistively, minimizing energy losses due to reactance.
When analyzing circuits at resonance, consider that the components' potential resistances add up linearly, simplifying the use of the power formula.
Voltage Calculation
Voltage in electric circuits is one of the fundamental electrical parameters, representing the potential energy difference between two points. To calculate the voltage in certain circuit conditions, like the given RCL circuit problem, we use fundamental formulas based on known quantities.By understanding these relationships:
  • The power \( P \) and current \( I \) are often given.
  • Using \( V = \frac{P}{I} \), we can find the voltage.
  • In our problem, substituting the given power and current values yields \( V = \frac{65.0}{0.530} = 122.64 \text{ volts} \).
This method is particularly helpful because it circumvents the need for extensive circuit analysis, instead using established relationships to arrive at the necessary value.
Understanding Electric Circuits
Electric circuits are networks for the transfer of electric power. They consist of elements like resistors, capacitors, inductors, and power sources. Each element plays a role in how the circuit behaves. - **RCL Circuits:** - RCL circuits are a genre of electric circuits that include resistors, capacitors, and inductors connected in series or parallel. - These components influence the overall impedance of the circuit, affecting how power is dissipated. - **Key Behaviors:** - Electric circuits exhibit behaviors like resonance which lead to fascinating applications in radio technology, filters, and oscillators. - Understanding the circuit's behavior ties into correctly applying formulas like the power formula to find missing values. Electric circuits, at their core, are channels for electricity flow, which can be manipulated through various designs to perform a multitude of functions. Appreciating these can help in troubleshooting and perfecting circuit design for desired outcomes.

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Most popular questions from this chapter

Two inductors are connected in parallel across the terminals of a generator. One has an inductance of \(L_{1}=0.030 \mathrm{H}\) , and the other has an inductance of \(L_{2}=0.060 \mathrm{H}\) . A single inductor, with an inductance \(L,\) is connected across the terminals of a second generator that has the same frequency and voltage as the first one. The current delivered by the second generator is equal to the total current delivered by the first generator. Find L.

The capacitance in a series RCL circuit is \(C_{1}=2.60 \mu \mathrm{F}\) , and the corresponding resonant frequency is \(f_{01}=7.30 \mathrm{kHz}\) . The generator frequency is 5.60 \(\mathrm{kHz}\) . What is the value of the capacitance \(C_{2}\) that should be added to the circuit so that the circuit will have a resonant frequency that matches the generator frequency? Note that you must decide whether \(C_{2}\) is added in series or in parallel with \(C_{1} .\)

The reactance of a capacitor is 68\(\Omega\) when the ac frequency is 460 \(\mathrm{Hz}\) . What is the reactance when the frequency is 870 \(\mathrm{Hz}\) ?

A capacitor is connected to an ac generator that has a frequency of 3.4 kHz and produces a voltage of 2.0 V. The current in the capacitor is 35 mA. When the same capacitor is connected to a second ac generator that has a frequency of 5.0 kHz, the current in the capacitor is 85 mA. What voltage does the second generator produce?

A tank circuit in a radio transmitter is a series RCL circuit connected to an antenna. The antenna broadcasts radio signals at the resonant frequency of the tank circuit. Suppose that a certain tank circuit in a shortwave radio transmitter has a fixed capacitance of \(1.8 \times 10^{-11} \mathrm{F}\) and a variable inductance. If the antenna is intended to broadcast radio signals ranging in frequency from 4.0 \(\mathrm{MHz}\) to 9.0 \(\mathrm{MHz}\) , find the (a) minimum and (b) maximum inductance of the tank circuit.

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