hquang001
- 31
- 3
- TL;DR
- 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 ?
.
Resistor is connected parallel to Voltage Source
- Thread starter hquang001
- Start date
Join the discussion
Ask a follow-up here, or get your own question answered by working scientists, mathematicians and engineers — people, not an autocomplete.
Real named experts · corrections over time · the nuance an AI answer skips
2 replies · 2K views
2025 Award
- 17,116
- 10,627
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.
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.
- 16,219
- 4,934
Because the influence on whatever more the complete circuit contains is zero ... 
Draw the circuits you mention and look at voltages and currents ...
[edit] ah ...
##\ ##
Draw the circuits you mention and look at voltages and currents ...
[edit] ah ...
##\ ##