# Resistor is connected parallel to Voltage Source

• hquang001
In summary, resistors only generate heat in certain situations and do not affect the analysis of the rest of the circuit, unless it is a heater or requires a heat source. Ideal voltage sources maintain the ideal voltage regardless of the current it supplies, while ideal current sources provide enough voltage to maintain the ideal current, regardless of the voltage across the resistor. The influence on the rest of the circuit is zero, as confirmed by drawing and analyzing the circuits.
hquang001
TL;DR Summary
Why in a circuit, when a resistor is connected parallel to a voltage source, or in series with current source, we can get rid of that resistor ?
.

Engineering news on Phys.org
Because in those situations the resistor only generates heat. The resistor does not affect the way the rest of the circuit is analysed, unless the circuit is a heater or needs the heat source.

An ideal voltage source will maintain the ideal voltage, no matter how much current it must supply.

An ideal current source will provide sufficient voltage to maintain the ideal current, no matter how much voltage is dropped across the resistor.

Because the influence on whatever more the complete circuit contains is zero ...

Draw the circuits you mention and look at voltages and currents ...

 ah ...

##\ ##

## 1. What is a resistor and how does it work?

A resistor is an electrical component that is used to limit the flow of electric current in a circuit. It works by converting electrical energy into heat, thus reducing the amount of current that can pass through it.

## 2. What does it mean for a resistor to be connected parallel to a voltage source?

When a resistor is connected parallel to a voltage source, it means that both the resistor and the voltage source are connected to the same two points in the circuit. This results in the voltage across the resistor being the same as the voltage across the voltage source.

## 3. How does connecting a resistor parallel to a voltage source affect the overall resistance of the circuit?

Connecting a resistor parallel to a voltage source decreases the overall resistance of the circuit. This is because the current has more than one path to flow through, resulting in a lower total resistance.

## 4. Can connecting a resistor parallel to a voltage source affect the voltage across other components in the circuit?

Yes, connecting a resistor parallel to a voltage source can affect the voltage across other components in the circuit. This is because the voltage across the resistor is the same as the voltage across the voltage source, and this voltage is shared among all components connected in parallel.

## 5. What are some practical applications of connecting a resistor parallel to a voltage source?

One practical application of connecting a resistor parallel to a voltage source is in voltage regulation. By adjusting the value of the resistor, the voltage across the voltage source can be regulated. This is commonly used in electronic devices to ensure a consistent and safe voltage supply.

Replies
44
Views
5K
Replies
7
Views
1K
Replies
13
Views
2K
Replies
78
Views
4K
Replies
7
Views
1K
Replies
5
Views
1K
Replies
3
Views
996
Replies
16
Views
2K
Replies
80
Views
3K
Replies
20
Views
3K