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Independent Sources

Independent sources produce current/voltage at a particular rate that is dependent only on time. These sources may output a constant current/voltage, or they may output current/voltage that varies with time.

Dependent Sources

Dependent sources are current or voltage sources whose output value is based on time or another value from the circuit. A dependent source may be based on the voltage over a resistor for example, or even the current flowing through a given wire. The following sources are possible:

  • Current-controlled current source
  • Current-controlled voltage source
  • Voltage-controlled current source
  • Voltage-controlled voltage source

Dependent sources are useful for modelling transistors or vacuum tubes.

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What renewable energy source is not dependent on the sun?

Geothermal energy is a renewable energy source that is not dependent on the sun. It involves harnessing the heat stored beneath the Earth's surface to generate electricity or provide heating. Geothermal energy is considered a reliable and constant source of energy.


What is the relationship between EMF and potential difference in an electrical circuit?

The relationship between EMF (electromotive force) and potential difference in an electrical circuit is that EMF is the total energy supplied by a source, while potential difference is the energy transferred per unit charge as it moves through the circuit. In simpler terms, EMF is the total push provided by the power source, while potential difference is the push experienced by the charges as they flow through the circuit.


Why an independent voltage source is made deactivated by shortening and an independent current source is made deactivated by open circuiting?

Short-circuiting an independent voltage source effectively sets its voltage to zero, deactivating it. Since current in a short circuit is maximized, this creates a situation where the voltage source cannot maintain its specified voltage. Open circuiting an independent current source prevents the flow of current, effectively deactivating it because without a complete path for current to flow, the current source cannot maintain its specified current output.


Differentiate between potential difference and electro motive force?

Potential difference is the difference in electric potential energy between two points in a circuit. It is measured in volts and represents the work done in moving a unit charge across the points. Electro motive force (EMF) is the energy per unit charge supplied by a source, like a battery or generator, to move charge around a circuit. It is also measured in volts and represents the energy input provided by the source.


How do you create a potential difference?

Potential difference arises between two conductors when there is a difference in the charge content between them. So, to create it u can take out or pump in charges, which is the job done by a battery.

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