Voltage drop across a resistor

[jsayre]

hey i was just wondering if anyone could help explain voltage drop across resistors to me. i have 9,200 volts that goes into a 5m ohm resistor, then a 4.5m ohm resistor, then it goes into 4 seperate 10k ohm resistors. i need to know what the voltage drop across each resistor is. Someone Please help me, im new at this and could use the lesson.

 

[Ian Rogers]

This should be in its own thread... I moved it for you.

 

[Mickster]

This thread may be helpful:
https://www.electro-tech-online.com/threads/determine-voltage-drop-across-resistors.37093/

 

[MikeMl]

hey i was just wondering if anyone could help explain voltage drop across resistors to me. i have 9,200 volts that goes into a 5m ohm resistor, then a 4.5m ohm resistor, then it goes into 4 seperate 10k ohm resistors. i need to know what the voltage drop across each resistor is. Someone Please help me, im new at this and could use the lesson.

The voltages at the taps are with respect to ground. To get the voltage across any resistor, subtract the values at its two ends.

Or you can compute it thusly: I=E/R, where E=9200 and R=5000k + 4500k + 4*10k = 9540k

9200/9540K = 0.96436mA

So, the voltage across any resistor = I*R, so for example the voltage across the bottom resistor is 0.96436mA*10K = 9.6436V

 

[KeepItSimpleStupid]

well,

The current is the same through every resistor. Find that and your home free. Then each voltage is I*Rx